diff --git a/fastapi-backend/alembic.ini b/fastapi-backend/alembic.ini
new file mode 100644
index 0000000..52cd8d1
--- /dev/null
+++ b/fastapi-backend/alembic.ini
@@ -0,0 +1,41 @@
+[alembic]
+# 模板路径
+script_location = fastapi-backend/alembic
+
+# 数据库连接URL
+sqlalchemy.url = mysql+pymysql://jiebanke:aiot741$12346@nj-cdb-3pwh2kz1.sql.tencentcdb.com:20784/jbkdata
+
+# 日志配置
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S
\ No newline at end of file
diff --git a/fastapi-backend/alembic/env.py b/fastapi-backend/alembic/env.py
new file mode 100644
index 0000000..99b9f96
--- /dev/null
+++ b/fastapi-backend/alembic/env.py
@@ -0,0 +1,79 @@
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# 导入模型
+from app.models.user import Base
+
+# 导入配置
+from app.core.config import settings
+
+# 确保Python能够找到app模块
+import os
+import sys
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
+
+# 这是Alembic Config对象，它提供对.ini文件中值的访问
+config = context.config
+
+# 解释配置文件并设置日志记录器
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# 添加你的模型元数据对象
+target_metadata = Base.metadata
+
+# 其他值来自config，可以通过以下方式定义：
+# my_important_option = config.get_main_option("my_important_option")
+# ... 等等。
+
+
+def run_migrations_offline() -> None:
+    """在'offline'模式下运行迁移。
+
+    这配置了上下文，只需要一个URL，并且不要求引擎可用。
+    跳过引擎创建，甚至不需要DBAPI可用。
+
+    调用context.execute()来执行迁移。
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """在'online'模式下运行迁移。
+
+    在这种情况下，我们创建了一个Engine并将其与迁移上下文关联。
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()
\ No newline at end of file
diff --git a/fastapi-backend/alembic/versions/0001_initial_migration.py b/fastapi-backend/alembic/versions/0001_initial_migration.py
new file mode 100644
index 0000000..f568c27
--- /dev/null
+++ b/fastapi-backend/alembic/versions/0001_initial_migration.py
@@ -0,0 +1,62 @@
+"""initial migration
+
+Revision ID: 0001
+Revises: 
+Create Date: 2025-09-11 16:00:00.000000
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '0001'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # 创建用户表
+    op.create_table(
+        'users',
+        sa.Column('id', sa.Integer, primary_key=True, index=True),
+        sa.Column('username', sa.String(50), unique=True, index=True, nullable=False),
+        sa.Column('password_hash', sa.String(255), nullable=False),
+        sa.Column('user_type', sa.Enum('farmer', 'merchant', 'admin', 'super_admin'), server_default='farmer'),
+        sa.Column('real_name', sa.String(50)),
+        sa.Column('nickname', sa.String(50)),
+        sa.Column('avatar_url', sa.String(255)),
+        sa.Column('email', sa.String(100), unique=True, index=True),
+        sa.Column('phone', sa.String(20), unique=True, index=True),
+        sa.Column('gender', sa.Enum('male', 'female', 'other'), server_default='other'),
+        sa.Column('birthday', sa.DateTime),
+        sa.Column('status', sa.Enum('active', 'inactive'), server_default='active'),
+        sa.Column('wechat_openid', sa.String(100), unique=True, index=True),
+        sa.Column('wechat_unionid', sa.String(100), unique=True, index=True),
+        sa.Column('level', sa.Integer, server_default='1'),
+        sa.Column('created_at', sa.DateTime, server_default=sa.func.now()),
+        sa.Column('updated_at', sa.DateTime, server_default=sa.func.now(), onupdate=sa.func.now()),
+        sa.Column('last_login', sa.DateTime)
+    )
+    
+    # 创建管理员表
+    op.create_table(
+        'admins',
+        sa.Column('id', sa.Integer, primary_key=True, index=True),
+        sa.Column('username', sa.String(50), unique=True, index=True, nullable=False),
+        sa.Column('password', sa.String(255), nullable=False),
+        sa.Column('email', sa.String(100), unique=True, index=True),
+        sa.Column('nickname', sa.String(50)),
+        sa.Column('avatar', sa.String(255)),
+        sa.Column('role', sa.Enum('admin', 'super_admin'), server_default='admin'),
+        sa.Column('status', sa.Enum('active', 'inactive'), server_default='active'),
+        sa.Column('last_login', sa.DateTime),
+        sa.Column('created_at', sa.DateTime, server_default=sa.func.now()),
+        sa.Column('updated_at', sa.DateTime, server_default=sa.func.now(), onupdate=sa.func.now())
+    )
+
+
+def downgrade():
+    op.drop_table('admins')
+    op.drop_table('users')
\ No newline at end of file
diff --git a/fastapi-backend/app/api/api.py b/fastapi-backend/app/api/api.py
new file mode 100644
index 0000000..d34f3a1
--- /dev/null
+++ b/fastapi-backend/app/api/api.py
@@ -0,0 +1,121 @@
+from fastapi import APIRouter, FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import JSONResponse
+from fastapi.exceptions import RequestValidationError
+from starlette.exceptions import HTTPException as StarletteHTTPException
+
+from app.api.endpoints import auth, users
+from app.core.config import settings
+from app.utils.response import error_response
+
+# 创建FastAPI应用
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    openapi_url=f"{settings.API_V1_STR}/openapi.json",
+    docs_url="/api-docs",
+    redoc_url="/redoc",
+)
+
+# 配置CORS
+if settings.BACKEND_CORS_ORIGINS:
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=[str(origin) for origin in settings.BACKEND_CORS_ORIGINS],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+else:
+    # 默认CORS配置
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=["*"],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+
+# 创建API路由
+api_router = APIRouter()
+
+# 添加各个端点路由
+api_router.include_router(auth.router, prefix="/auth", tags=["认证"])
+api_router.include_router(users.router, prefix="/users", tags=["用户"])
+
+# 将API路由添加到应用
+app.include_router(api_router, prefix=settings.API_V1_STR)
+
+
+# 自定义异常处理
+@app.exception_handler(StarletteHTTPException)
+async def http_exception_handler(request, exc):
+    return JSONResponse(
+        status_code=exc.status_code,
+        content=error_response(
+            message=str(exc.detail),
+            code=exc.status_code
+        )
+    )
+
+
+@app.exception_handler(RequestValidationError)
+async def validation_exception_handler(request, exc):
+    errors = []
+    for error in exc.errors():
+        error_msg = f"{error['loc'][-1]}: {error['msg']}"
+        errors.append(error_msg)
+    
+    return JSONResponse(
+        status_code=400,
+        content=error_response(
+            message="请求参数验证失败",
+            code=400,
+            data={"errors": errors}
+        )
+    )
+
+
+# 健康检查路由
+@app.get("/health")
+async def health_check():
+    import platform
+    import psutil
+    from datetime import datetime
+    
+    return {
+        "status": "OK",
+        "timestamp": datetime.now().isoformat(),
+        "uptime": psutil.boot_time(),
+        "environment": settings.DEBUG and "development" or "production",
+        "no_db_mode": settings.NO_DB_MODE,
+        "system_info": {
+            "python_version": platform.python_version(),
+            "platform": platform.platform(),
+            "cpu_count": psutil.cpu_count(),
+            "memory": {
+                "total": psutil.virtual_memory().total,
+                "available": psutil.virtual_memory().available,
+            }
+        }
+    }
+
+
+# 系统统计路由
+@app.get("/system-stats")
+async def system_stats():
+    import platform
+    import psutil
+    from datetime import datetime
+    
+    return {
+        "status": "OK",
+        "timestamp": datetime.now().isoformat(),
+        "environment": settings.DEBUG and "development" or "production",
+        "python_version": platform.python_version(),
+        "memory_usage": dict(psutil.virtual_memory()._asdict()),
+        "uptime": psutil.boot_time(),
+        "cpu_count": psutil.cpu_count(),
+        "platform": platform.platform(),
+        "architecture": platform.architecture(),
+        "no_db_mode": settings.NO_DB_MODE
+    }
\ No newline at end of file
diff --git a/fastapi-backend/app/api/deps.py b/fastapi-backend/app/api/deps.py
new file mode 100644
index 0000000..56fe47e
--- /dev/null
+++ b/fastapi-backend/app/api/deps.py
@@ -0,0 +1,115 @@
+from typing import Generator, Optional
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from jose import jwt, JWTError
+from pydantic import ValidationError
+from sqlalchemy.orm import Session
+
+from app.core.config import settings
+from app.core.security import verify_password
+from app.crud.user import user, admin
+from app.db.session import SessionLocal
+from app.models.user import User, Admin
+from app.schemas.user import TokenPayload
+
+# OAuth2密码承载令牌
+oauth2_scheme = OAuth2PasswordBearer(
+    tokenUrl=f"{settings.API_V1_STR}/auth/login"
+)
+
+# 获取数据库会话
+def get_db() -> Generator:
+    try:
+        db = SessionLocal()
+        yield db
+    finally:
+        db.close()
+
+# 获取当前用户
+def get_current_user(
+    db: Session = Depends(get_db), token: str = Depends(oauth2_scheme)
+) -> User:
+    try:
+        payload = jwt.decode(
+            token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM]
+        )
+        token_data = TokenPayload(**payload)
+        
+        # 检查令牌是否过期
+        if token_data.exp is None:
+            raise HTTPException(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                detail="令牌无效",
+                headers={"WWW-Authenticate": "Bearer"},
+            )
+    except (JWTError, ValidationError):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="无法验证凭据",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    
+    # 获取用户
+    current_user = user.get(db, user_id=token_data.sub)
+    if not current_user:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="用户不存在")
+    
+    # 检查用户是否活跃
+    if not user.is_active(current_user):
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="账户已被禁用")
+    
+    return current_user
+
+# 获取当前活跃用户
+def get_current_active_user(
+    current_user: User = Depends(get_current_user),
+) -> User:
+    if not user.is_active(current_user):
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="账户已被禁用")
+    return current_user
+
+# 获取当前管理员
+def get_current_admin(
+    db: Session = Depends(get_db), token: str = Depends(oauth2_scheme)
+) -> Admin:
+    try:
+        payload = jwt.decode(
+            token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM]
+        )
+        token_data = TokenPayload(**payload)
+    except (JWTError, ValidationError):
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="无法验证凭据",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+    
+    # 获取管理员
+    current_admin = admin.get(db, admin_id=token_data.sub)
+    if not current_admin:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="管理员不存在")
+    
+    # 检查管理员是否活跃
+    if not admin.is_active(current_admin):
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="账户已被禁用")
+    
+    return current_admin
+
+# 获取当前活跃管理员
+def get_current_active_admin(
+    current_admin: Admin = Depends(get_current_admin),
+) -> Admin:
+    if not admin.is_active(current_admin):
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="账户已被禁用")
+    return current_admin
+
+# 获取超级管理员
+def get_current_super_admin(
+    current_admin: Admin = Depends(get_current_admin),
+) -> Admin:
+    if current_admin.role != "super_admin":
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="需要超级管理员权限"
+        )
+    return current_admin
\ No newline at end of file
diff --git a/fastapi-backend/app/api/endpoints/auth.py b/fastapi-backend/app/api/endpoints/auth.py
new file mode 100644
index 0000000..e20fa85
--- /dev/null
+++ b/fastapi-backend/app/api/endpoints/auth.py
@@ -0,0 +1,332 @@
+from datetime import timedelta
+from typing import Any
+
+from fastapi import APIRouter, Body, Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordRequestForm
+from sqlalchemy.orm import Session
+
+from app.api.deps import get_db, get_current_user
+from app.core.config import settings
+from app.core.security import create_access_token, create_refresh_token
+from app.crud.user import user, admin
+from app.schemas.user import (
+    UserCreate, UserResponse, UserLogin, UserWithToken,
+    Token, PasswordChange, AdminWithToken
+)
+from app.utils.response import success_response, error_response
+from app.utils.errors import BadRequestError, UnauthorizedError, ForbiddenError, NotFoundError
+
+router = APIRouter()
+
+
+@router.post("/register", response_model=UserWithToken, status_code=status.HTTP_201_CREATED)
+def register(
+    *,
+    db: Session = Depends(get_db),
+    user_in: UserCreate,
+) -> Any:
+    """
+    用户注册
+    """
+    # 检查用户名是否已存在
+    if user.get_by_username(db, username=user_in.username):
+        raise BadRequestError("用户名已存在")
+    
+    # 检查邮箱是否已存在
+    if user_in.email and user.get_by_email(db, email=user_in.email):
+        raise BadRequestError("邮箱已存在")
+    
+    # 检查手机号是否已存在
+    if user_in.phone and user.get_by_phone(db, phone=user_in.phone):
+        raise BadRequestError("手机号已存在")
+    
+    # 创建新用户
+    db_user = user.create(db, obj_in=user_in)
+    
+    # 更新最后登录时间
+    user.update_last_login(db, db_obj=db_user)
+    
+    # 生成令牌
+    access_token = create_access_token(db_user.id)
+    refresh_token = create_refresh_token(db_user.id)
+    
+    return success_response(
+        data={
+            "user": db_user,
+            "token": access_token,
+            "refresh_token": refresh_token
+        },
+        message="注册成功",
+        code=201
+    )
+
+
+@router.post("/login", response_model=UserWithToken)
+def login(
+    *,
+    db: Session = Depends(get_db),
+    form_data: OAuth2PasswordRequestForm = Depends()
+) -> Any:
+    """
+    用户登录
+    """
+    # 验证用户
+    db_user = user.authenticate(db, username=form_data.username, password=form_data.password)
+    if not db_user:
+        raise UnauthorizedError("用户名或密码错误")
+    
+    # 检查用户状态
+    if not user.is_active(db_user):
+        raise ForbiddenError("账户已被禁用")
+    
+    # 更新最后登录时间
+    user.update_last_login(db, db_obj=db_user)
+    
+    # 生成令牌
+    access_token = create_access_token(db_user.id)
+    refresh_token = create_refresh_token(db_user.id)
+    
+    return success_response(
+        data={
+            "user": db_user,
+            "token": access_token,
+            "refresh_token": refresh_token
+        },
+        message="登录成功"
+    )
+
+
+@router.post("/login/json", response_model=UserWithToken)
+def login_json(
+    *,
+    db: Session = Depends(get_db),
+    login_in: UserLogin
+) -> Any:
+    """
+    用户登录（JSON格式）
+    """
+    # 验证用户
+    db_user = user.authenticate(db, username=login_in.username, password=login_in.password)
+    if not db_user:
+        raise UnauthorizedError("用户名或密码错误")
+    
+    # 检查用户状态
+    if not user.is_active(db_user):
+        raise ForbiddenError("账户已被禁用")
+    
+    # 更新最后登录时间
+    user.update_last_login(db, db_obj=db_user)
+    
+    # 生成令牌
+    access_token = create_access_token(db_user.id)
+    refresh_token = create_refresh_token(db_user.id)
+    
+    return success_response(
+        data={
+            "user": db_user,
+            "token": access_token,
+            "refresh_token": refresh_token
+        },
+        message="登录成功"
+    )
+
+
+@router.post("/refresh-token", response_model=Token)
+def refresh_token(
+    *,
+    db: Session = Depends(get_db),
+    refresh_token: str = Body(..., embed=True)
+) -> Any:
+    """
+    刷新访问令牌
+    """
+    try:
+        from jose import jwt
+        from pydantic import ValidationError
+        from app.schemas.user import TokenPayload
+        
+        payload = jwt.decode(
+            refresh_token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM]
+        )
+        token_data = TokenPayload(**payload)
+        
+        # 检查令牌类型
+        if token_data.type != "refresh":
+            raise UnauthorizedError("无效的刷新令牌")
+        
+        # 检查用户是否存在
+        db_user = user.get(db, user_id=token_data.sub)
+        if not db_user:
+            raise NotFoundError("用户不存在")
+        
+        # 检查用户状态
+        if not user.is_active(db_user):
+            raise ForbiddenError("账户已被禁用")
+        
+        # 生成新令牌
+        access_token = create_access_token(db_user.id)
+        new_refresh_token = create_refresh_token(db_user.id)
+        
+        return success_response(
+            data={
+                "access_token": access_token,
+                "refresh_token": new_refresh_token,
+                "token_type": "bearer"
+            }
+        )
+    except (jwt.JWTError, ValidationError):
+        raise UnauthorizedError("无效的刷新令牌")
+
+
+@router.get("/me", response_model=UserResponse)
+def get_current_user_info(
+    current_user: UserResponse = Depends(get_current_user)
+) -> Any:
+    """
+    获取当前用户信息
+    """
+    return success_response(data=current_user)
+
+
+@router.put("/profile", response_model=UserResponse)
+def update_profile(
+    *,
+    db: Session = Depends(get_db),
+    current_user: UserResponse = Depends(get_current_user),
+    profile_in: dict = Body(...)
+) -> Any:
+    """
+    更新用户个人信息
+    """
+    # 更新用户信息
+    db_user = user.update(db, db_obj=current_user, obj_in=profile_in)
+    
+    return success_response(
+        data=db_user,
+        message="个人信息更新成功"
+    )
+
+
+@router.put("/password", response_model=dict)
+def change_password(
+    *,
+    db: Session = Depends(get_db),
+    current_user: UserResponse = Depends(get_current_user),
+    password_in: PasswordChange
+) -> Any:
+    """
+    修改密码
+    """
+    from app.core.security import verify_password
+    
+    # 验证当前密码
+    if not verify_password(password_in.current_password, current_user.password_hash):
+        raise UnauthorizedError("当前密码错误")
+    
+    # 更新密码
+    user.update_password(db, db_obj=current_user, new_password=password_in.new_password)
+    
+    return success_response(message="密码修改成功")
+
+
+@router.post("/admin/login", response_model=AdminWithToken)
+def admin_login(
+    *,
+    db: Session = Depends(get_db),
+    login_in: UserLogin
+) -> Any:
+    """
+    管理员登录
+    """
+    # 验证管理员
+    db_admin = admin.authenticate(db, username=login_in.username, password=login_in.password)
+    if not db_admin:
+        raise UnauthorizedError("用户名或密码错误")
+    
+    # 检查管理员状态
+    if not admin.is_active(db_admin):
+        raise ForbiddenError("账户已被禁用")
+    
+    # 更新最后登录时间
+    admin.update_last_login(db, db_obj=db_admin)
+    
+    # 生成令牌
+    access_token = create_access_token(db_admin.id)
+    refresh_token = create_refresh_token(db_admin.id)
+    
+    return success_response(
+        data={
+            "admin": db_admin,
+            "token": access_token,
+            "refresh_token": refresh_token
+        },
+        message="管理员登录成功"
+    )
+
+
+@router.post("/wechat", response_model=UserWithToken)
+def wechat_login(
+    *,
+    db: Session = Depends(get_db),
+    code: str = Body(...),
+    user_info: dict = Body(None)
+) -> Any:
+    """
+    微信登录/注册
+    """
+    # 模拟获取微信用户信息
+    wechat_user_info = {
+        "openid": f"mock_openid_{code}",
+        "unionid": f"mock_unionid_{code}",
+        "nickname": user_info.get("nickName") if user_info else "微信用户",
+        "avatar": user_info.get("avatarUrl") if user_info else "",
+        "gender": "male" if user_info and user_info.get("gender") == 1 else 
+                 "female" if user_info and user_info.get("gender") == 2 else "other"
+    }
+    
+    # 查找是否已存在微信用户
+    db_user = user.get_by_wechat_openid(db, openid=wechat_user_info["openid"])
+    
+    if db_user:
+        # 更新最后登录时间
+        user.update_last_login(db, db_obj=db_user)
+    else:
+        # 创建新用户（微信注册）
+        import secrets
+        import string
+        from app.schemas.user import UserCreate
+        
+        # 生成随机密码
+        alphabet = string.ascii_letters + string.digits
+        random_password = ''.join(secrets.choice(alphabet) for _ in range(12))
+        
+        # 创建用户
+        user_in = UserCreate(
+            username=f"wx_{wechat_user_info['openid'][-8:]}",
+            password=random_password,
+            nickname=wechat_user_info["nickname"],
+            user_type="farmer"
+        )
+        
+        db_user = user.create(db, obj_in=user_in)
+        
+        # 更新微信信息
+        user.update(db, db_obj=db_user, obj_in={
+            "wechat_openid": wechat_user_info["openid"],
+            "wechat_unionid": wechat_user_info["unionid"],
+            "avatar_url": wechat_user_info["avatar"],
+            "gender": wechat_user_info["gender"]
+        })
+    
+    # 生成令牌
+    access_token = create_access_token(db_user.id)
+    refresh_token = create_refresh_token(db_user.id)
+    
+    return success_response(
+        data={
+            "user": db_user,
+            "token": access_token,
+            "refresh_token": refresh_token
+        },
+        message="微信登录成功"
+    )
\ No newline at end of file
diff --git a/fastapi-backend/app/api/endpoints/users.py b/fastapi-backend/app/api/endpoints/users.py
new file mode 100644
index 0000000..220b5c5
--- /dev/null
+++ b/fastapi-backend/app/api/endpoints/users.py
@@ -0,0 +1,174 @@
+from typing import Any, List
+
+from fastapi import APIRouter, Body, Depends, Query, Path, status
+from sqlalchemy.orm import Session
+
+from app.api.deps import get_db, get_current_user, get_current_admin, get_current_super_admin
+from app.crud.user import user
+from app.models.user import User
+from app.schemas.user import (
+    UserResponse, UserUpdate, UserListResponse, 
+    PaginationResponse, UserStatistics, BatchUserStatusUpdate
+)
+from app.utils.response import success_response
+from app.utils.errors import NotFoundError, BadRequestError
+
+router = APIRouter()
+
+
+@router.get("/profile", response_model=UserResponse)
+def get_user_profile(
+    current_user: User = Depends(get_current_user),
+) -> Any:
+    """
+    获取当前用户个人信息
+    """
+    return success_response(data=current_user)
+
+
+@router.put("/profile", response_model=UserResponse)
+def update_user_profile(
+    *,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+    user_in: UserUpdate,
+) -> Any:
+    """
+    更新当前用户个人信息
+    """
+    # 更新用户信息
+    db_user = user.update(db, db_obj=current_user, obj_in=user_in)
+    
+    return success_response(
+        data=db_user,
+        message="个人信息更新成功"
+    )
+
+
+@router.get("", response_model=UserListResponse)
+def get_users(
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin),
+    page: int = Query(1, ge=1, description="页码"),
+    page_size: int = Query(20, ge=1, le=100, description="每页数量"),
+    user_type: str = Query(None, description="用户类型"),
+    status: str = Query(None, description="用户状态"),
+    keyword: str = Query(None, description="搜索关键词"),
+) -> Any:
+    """
+    获取用户列表（管理员）
+    """
+    # 计算分页参数
+    skip = (page - 1) * page_size
+    
+    # 获取用户列表
+    users_list = user.get_multi(
+        db, skip=skip, limit=page_size,
+        user_type=user_type, status=status, keyword=keyword
+    )
+    
+    # 获取用户总数
+    total = user.count(
+        db, user_type=user_type, status=status, keyword=keyword
+    )
+    
+    # 计算总页数
+    total_pages = (total + page_size - 1) // page_size
+    
+    # 构建分页信息
+    pagination = PaginationResponse(
+        page=page,
+        page_size=page_size,
+        total=total,
+        total_pages=total_pages
+    )
+    
+    return success_response(
+        data={
+            "users": users_list,
+            "pagination": pagination
+        }
+    )
+
+
+@router.get("/{user_id}", response_model=UserResponse)
+def get_user_by_id(
+    user_id: int = Path(..., ge=1),
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin),
+) -> Any:
+    """
+    获取用户详情（管理员）
+    """
+    # 获取用户
+    db_user = user.get(db, user_id=user_id)
+    if not db_user:
+        raise NotFoundError("用户不存在")
+    
+    return success_response(data=db_user)
+
+
+@router.get("/statistics", response_model=UserStatistics)
+def get_user_statistics(
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin),
+) -> Any:
+    """
+    获取用户统计信息（管理员）
+    """
+    # 获取统计信息
+    statistics = user.get_statistics(db)
+    
+    return success_response(data=statistics)
+
+
+@router.post("/batch-status", response_model=dict)
+def batch_update_user_status(
+    *,
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_admin),
+    batch_in: BatchUserStatusUpdate,
+) -> Any:
+    """
+    批量操作用户状态（管理员）
+    """
+    # 检查用户ID列表是否为空
+    if not batch_in.user_ids:
+        raise BadRequestError("用户ID列表不能为空")
+    
+    # 批量更新用户状态
+    affected_rows = user.batch_update_status(
+        db, user_ids=batch_in.user_ids, status=batch_in.status
+    )
+    
+    return success_response(
+        data={
+            "message": f"成功更新{affected_rows}个用户的状态",
+            "affected_rows": affected_rows
+        }
+    )
+
+
+@router.delete("/{user_id}", response_model=dict)
+def delete_user(
+    user_id: int = Path(..., ge=1),
+    db: Session = Depends(get_db),
+    current_admin: User = Depends(get_current_super_admin),
+) -> Any:
+    """
+    删除用户（超级管理员）
+    """
+    # 获取用户
+    db_user = user.get(db, user_id=user_id)
+    if not db_user:
+        raise NotFoundError("用户不存在")
+    
+    # 删除用户
+    user.remove(db, user_id=user_id)
+    
+    return success_response(
+        data={
+            "message": "用户删除成功",
+            "user_id": user_id
+        }
+    )
\ No newline at end of file
diff --git a/fastapi-backend/app/core/config.py b/fastapi-backend/app/core/config.py
new file mode 100644
index 0000000..985a7ef
--- /dev/null
+++ b/fastapi-backend/app/core/config.py
@@ -0,0 +1,59 @@
+import os
+from typing import Any, Dict, List, Optional, Union
+from pydantic import AnyHttpUrl, field_validator
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    # 基本配置
+    PROJECT_NAME: str = "结伴客API"
+    API_V1_STR: str = "/api/v1"
+    DEBUG: bool = os.getenv("DEBUG", "False").lower() == "true"
+    
+    # 服务器配置
+    HOST: str = os.getenv("HOST", "0.0.0.0")
+    PORT: int = int(os.getenv("PORT", "3110"))
+    
+    # 安全配置
+    SECRET_KEY: str = os.getenv("SECRET_KEY", "dev-jwt-secret-key-2024")
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = int(os.getenv("ACCESS_TOKEN_EXPIRE_MINUTES", "10080"))  # 7天
+    REFRESH_TOKEN_EXPIRE_MINUTES: int = int(os.getenv("REFRESH_TOKEN_EXPIRE_MINUTES", "43200"))  # 30天
+    ALGORITHM: str = "HS256"
+    
+    # 数据库配置
+    DB_HOST: str = os.getenv("DB_HOST", "nj-cdb-3pwh2kz1.sql.tencentcdb.com")
+    DB_PORT: int = int(os.getenv("DB_PORT", "20784"))
+    DB_USER: str = os.getenv("DB_USER", "jiebanke")
+    DB_PASSWORD: str = os.getenv("DB_PASSWORD", "aiot741$12346")
+    DB_NAME: str = os.getenv("DB_NAME", "jbkdata")
+    
+    # 构建数据库URL
+    @property
+    def SQLALCHEMY_DATABASE_URI(self) -> str:
+        return f"mysql+pymysql://{self.DB_USER}:{self.DB_PASSWORD}@{self.DB_HOST}:{self.DB_PORT}/{self.DB_NAME}"
+    
+    # CORS配置
+    BACKEND_CORS_ORIGINS: List[AnyHttpUrl] = []
+    
+    @field_validator("BACKEND_CORS_ORIGINS", mode="before")
+    def assemble_cors_origins(cls, v: Union[str, List[str]]) -> Union[List[str], str]:
+        if isinstance(v, str) and not v.startswith("["):
+            return [i.strip() for i in v.split(",")]
+        elif isinstance(v, (list, str)):
+            return v
+        raise ValueError(v)
+    
+    # 上传文件配置
+    UPLOAD_DIR: str = "uploads"
+    MAX_FILE_SIZE: int = 10 * 1024 * 1024  # 10MB
+    ALLOWED_EXTENSIONS: List[str] = ["jpg", "jpeg", "png", "gif", "webp"]
+    
+    # 无数据库模式
+    NO_DB_MODE: bool = os.getenv("NO_DB_MODE", "False").lower() == "true"
+    
+    class Config:
+        case_sensitive = True
+        env_file = ".env"
+
+
+settings = Settings()
\ No newline at end of file
diff --git a/fastapi-backend/app/core/security.py b/fastapi-backend/app/core/security.py
new file mode 100644
index 0000000..b5533dd
--- /dev/null
+++ b/fastapi-backend/app/core/security.py
@@ -0,0 +1,46 @@
+from datetime import datetime, timedelta
+from typing import Any, Optional, Union
+
+from jose import jwt
+from passlib.context import CryptContext
+
+from app.core.config import settings
+
+# 密码上下文
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+# 验证密码
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+# 获取密码哈希
+def get_password_hash(password: str) -> str:
+    return pwd_context.hash(password)
+
+# 创建访问令牌
+def create_access_token(
+    subject: Union[str, Any], expires_delta: Optional[timedelta] = None
+) -> str:
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(
+            minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES
+        )
+    to_encode = {"exp": expire, "sub": str(subject)}
+    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
+    return encoded_jwt
+
+# 创建刷新令牌
+def create_refresh_token(
+    subject: Union[str, Any], expires_delta: Optional[timedelta] = None
+) -> str:
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(
+            minutes=settings.REFRESH_TOKEN_EXPIRE_MINUTES
+        )
+    to_encode = {"exp": expire, "sub": str(subject), "type": "refresh"}
+    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
+    return encoded_jwt
\ No newline at end of file
diff --git a/fastapi-backend/app/crud/user.py b/fastapi-backend/app/crud/user.py
new file mode 100644
index 0000000..57bdce2
--- /dev/null
+++ b/fastapi-backend/app/crud/user.py
@@ -0,0 +1,287 @@
+from datetime import datetime
+from typing import Any, Dict, Optional, Union, List
+from sqlalchemy.orm import Session
+from sqlalchemy import func, or_
+
+from app.core.security import get_password_hash, verify_password
+from app.models.user import User, Admin
+from app.schemas.user import UserCreate, UserUpdate, AdminCreate, AdminUpdate
+
+
+# 用户CRUD操作
+class CRUDUser:
+    # 根据ID获取用户
+    def get(self, db: Session, user_id: int) -> Optional[User]:
+        return db.query(User).filter(User.id == user_id).first()
+    
+    # 根据用户名获取用户
+    def get_by_username(self, db: Session, username: str) -> Optional[User]:
+        return db.query(User).filter(User.username == username).first()
+    
+    # 根据邮箱获取用户
+    def get_by_email(self, db: Session, email: str) -> Optional[User]:
+        return db.query(User).filter(User.email == email).first()
+    
+    # 根据手机号获取用户
+    def get_by_phone(self, db: Session, phone: str) -> Optional[User]:
+        return db.query(User).filter(User.phone == phone).first()
+    
+    # 根据微信OpenID获取用户
+    def get_by_wechat_openid(self, db: Session, openid: str) -> Optional[User]:
+        return db.query(User).filter(User.wechat_openid == openid).first()
+    
+    # 创建用户
+    def create(self, db: Session, obj_in: UserCreate) -> User:
+        db_obj = User(
+            username=obj_in.username,
+            password_hash=get_password_hash(obj_in.password),
+            user_type=obj_in.user_type,
+            real_name=obj_in.real_name or obj_in.username,
+            nickname=obj_in.nickname or obj_in.username,
+            email=obj_in.email,
+            phone=obj_in.phone,
+            created_at=datetime.now(),
+            updated_at=datetime.now()
+        )
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+    
+    # 更新用户
+    def update(
+        self, db: Session, *, db_obj: User, obj_in: Union[UserUpdate, Dict[str, Any]]
+    ) -> User:
+        if isinstance(obj_in, dict):
+            update_data = obj_in
+        else:
+            update_data = obj_in.dict(exclude_unset=True)
+        
+        # 更新时间
+        update_data["updated_at"] = datetime.now()
+        
+        for field in update_data:
+            if field in update_data:
+                setattr(db_obj, field, update_data[field])
+        
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+    
+    # 更新用户密码
+    def update_password(self, db: Session, db_obj: User, new_password: str) -> User:
+        db_obj.password_hash = get_password_hash(new_password)
+        db_obj.updated_at = datetime.now()
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+    
+    # 更新用户最后登录时间
+    def update_last_login(self, db: Session, db_obj: User) -> User:
+        db_obj.last_login = datetime.now()
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+    
+    # 验证用户密码
+    def authenticate(self, db: Session, username: str, password: str) -> Optional[User]:
+        user = self.get_by_username(db, username)
+        if not user:
+            user = self.get_by_email(db, username)
+        if not user:
+            user = self.get_by_phone(db, username)
+        if not user:
+            return None
+        if not verify_password(password, user.password_hash):
+            return None
+        return user
+    
+    # 检查用户是否活跃
+    def is_active(self, user: User) -> bool:
+        return user.status == "active"
+    
+    # 获取用户列表（带分页）
+    def get_multi(
+        self, db: Session, *, skip: int = 0, limit: int = 100, 
+        user_type: Optional[str] = None, status: Optional[str] = None,
+        keyword: Optional[str] = None
+    ) -> List[User]:
+        query = db.query(User)
+        
+        # 应用过滤条件
+        if user_type:
+            query = query.filter(User.user_type == user_type)
+        if status:
+            query = query.filter(User.status == status)
+        if keyword:
+            query = query.filter(
+                or_(
+                    User.username.like(f"%{keyword}%"),
+                    User.real_name.like(f"%{keyword}%"),
+                    User.nickname.like(f"%{keyword}%"),
+                    User.email.like(f"%{keyword}%"),
+                    User.phone.like(f"%{keyword}%")
+                )
+            )
+        
+        return query.offset(skip).limit(limit).all()
+    
+    # 获取用户总数
+    def count(
+        self, db: Session, *, user_type: Optional[str] = None, 
+        status: Optional[str] = None, keyword: Optional[str] = None
+    ) -> int:
+        query = db.query(func.count(User.id))
+        
+        # 应用过滤条件
+        if user_type:
+            query = query.filter(User.user_type == user_type)
+        if status:
+            query = query.filter(User.status == status)
+        if keyword:
+            query = query.filter(
+                or_(
+                    User.username.like(f"%{keyword}%"),
+                    User.real_name.like(f"%{keyword}%"),
+                    User.nickname.like(f"%{keyword}%"),
+                    User.email.like(f"%{keyword}%"),
+                    User.phone.like(f"%{keyword}%")
+                )
+            )
+        
+        return query.scalar()
+    
+    # 批量更新用户状态
+    def batch_update_status(
+        self, db: Session, user_ids: List[int], status: str
+    ) -> int:
+        result = db.query(User).filter(User.id.in_(user_ids)).update(
+            {"status": status, "updated_at": datetime.now()},
+            synchronize_session=False
+        )
+        db.commit()
+        return result
+    
+    # 删除用户
+    def remove(self, db: Session, *, user_id: int) -> Optional[User]:
+        user = db.query(User).filter(User.id == user_id).first()
+        if user:
+            db.delete(user)
+            db.commit()
+        return user
+    
+    # 获取用户统计信息
+    def get_statistics(self, db: Session) -> Dict[str, Any]:
+        total_users = db.query(func.count(User.id)).scalar()
+        farmers = db.query(func.count(User.id)).filter(User.user_type == "farmer").scalar()
+        merchants = db.query(func.count(User.id)).filter(User.user_type == "merchant").scalar()
+        admins = db.query(func.count(User.id)).filter(
+            or_(User.user_type == "admin", User.user_type == "super_admin")
+        ).scalar()
+        active_users = db.query(func.count(User.id)).filter(User.status == "active").scalar()
+        inactive_users = db.query(func.count(User.id)).filter(User.status == "inactive").scalar()
+        
+        return {
+            "total_users": total_users,
+            "farmers": farmers,
+            "merchants": merchants,
+            "admins": admins,
+            "active_users": active_users,
+            "inactive_users": inactive_users,
+            "date": datetime.now()
+        }
+
+
+# 管理员CRUD操作
+class CRUDAdmin:
+    # 根据ID获取管理员
+    def get(self, db: Session, admin_id: int) -> Optional[Admin]:
+        return db.query(Admin).filter(Admin.id == admin_id).first()
+    
+    # 根据用户名获取管理员
+    def get_by_username(self, db: Session, username: str) -> Optional[Admin]:
+        return db.query(Admin).filter(Admin.username == username).first()
+    
+    # 创建管理员
+    def create(self, db: Session, obj_in: AdminCreate) -> Admin:
+        db_obj = Admin(
+            username=obj_in.username,
+            password=get_password_hash(obj_in.password),
+            email=obj_in.email,
+            nickname=obj_in.nickname or obj_in.username,
+            avatar=obj_in.avatar,
+            role=obj_in.role,
+            created_at=datetime.now(),
+            updated_at=datetime.now()
+        )
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+    
+    # 更新管理员
+    def update(
+        self, db: Session, *, db_obj: Admin, obj_in: Union[AdminUpdate, Dict[str, Any]]
+    ) -> Admin:
+        if isinstance(obj_in, dict):
+            update_data = obj_in
+        else:
+            update_data = obj_in.dict(exclude_unset=True)
+        
+        # 更新时间
+        update_data["updated_at"] = datetime.now()
+        
+        for field in update_data:
+            if field in update_data:
+                setattr(db_obj, field, update_data[field])
+        
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+    
+    # 更新管理员密码
+    def update_password(self, db: Session, db_obj: Admin, new_password: str) -> Admin:
+        db_obj.password = get_password_hash(new_password)
+        db_obj.updated_at = datetime.now()
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+    
+    # 更新管理员最后登录时间
+    def update_last_login(self, db: Session, db_obj: Admin) -> Admin:
+        db_obj.last_login = datetime.now()
+        db.add(db_obj)
+        db.commit()
+        db.refresh(db_obj)
+        return db_obj
+    
+    # 验证管理员密码
+    def authenticate(self, db: Session, username: str, password: str) -> Optional[Admin]:
+        admin = self.get_by_username(db, username)
+        if not admin:
+            return None
+        if not verify_password(password, admin.password):
+            return None
+        return admin
+    
+    # 检查管理员是否活跃
+    def is_active(self, admin: Admin) -> bool:
+        return admin.status == "active"
+    
+    # 删除管理员
+    def remove(self, db: Session, *, admin_id: int) -> Optional[Admin]:
+        admin = db.query(Admin).filter(Admin.id == admin_id).first()
+        if admin:
+            db.delete(admin)
+            db.commit()
+        return admin
+
+
+# 实例化CRUD对象
+user = CRUDUser()
+admin = CRUDAdmin()
\ No newline at end of file
diff --git a/fastapi-backend/app/db/session.py b/fastapi-backend/app/db/session.py
new file mode 100644
index 0000000..c11086b
--- /dev/null
+++ b/fastapi-backend/app/db/session.py
@@ -0,0 +1,29 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+from app.core.config import settings
+
+# 创建数据库引擎
+engine = create_engine(
+    settings.SQLALCHEMY_DATABASE_URI,
+    pool_pre_ping=True,
+    pool_recycle=3600,
+    pool_size=20,
+    max_overflow=0,
+    echo=settings.DEBUG
+)
+
+# 创建会话工厂
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+# 创建基础模型类
+Base = declarative_base()
+
+# 获取数据库会话
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
\ No newline at end of file
diff --git a/fastapi-backend/app/models/user.py b/fastapi-backend/app/models/user.py
new file mode 100644
index 0000000..607add5
--- /dev/null
+++ b/fastapi-backend/app/models/user.py
@@ -0,0 +1,44 @@
+from datetime import datetime
+from sqlalchemy import Boolean, Column, String, Integer, DateTime, Enum
+from sqlalchemy.sql import func
+
+from app.db.session import Base
+
+
+class User(Base):
+    __tablename__ = "users"
+
+    id = Column(Integer, primary_key=True, index=True)
+    username = Column(String(50), unique=True, index=True, nullable=False)
+    password_hash = Column(String(255), nullable=False)
+    user_type = Column(Enum('farmer', 'merchant', 'admin', 'super_admin'), default='farmer')
+    real_name = Column(String(50))
+    nickname = Column(String(50))
+    avatar_url = Column(String(255))
+    email = Column(String(100), unique=True, index=True)
+    phone = Column(String(20), unique=True, index=True)
+    gender = Column(Enum('male', 'female', 'other'), default='other')
+    birthday = Column(DateTime)
+    status = Column(Enum('active', 'inactive'), default='active')
+    wechat_openid = Column(String(100), unique=True, index=True)
+    wechat_unionid = Column(String(100), unique=True, index=True)
+    level = Column(Integer, default=1)
+    created_at = Column(DateTime, default=func.now())
+    updated_at = Column(DateTime, default=func.now(), onupdate=func.now())
+    last_login = Column(DateTime)
+
+
+class Admin(Base):
+    __tablename__ = "admins"
+
+    id = Column(Integer, primary_key=True, index=True)
+    username = Column(String(50), unique=True, index=True, nullable=False)
+    password = Column(String(255), nullable=False)
+    email = Column(String(100), unique=True, index=True)
+    nickname = Column(String(50))
+    avatar = Column(String(255))
+    role = Column(Enum('admin', 'super_admin'), default='admin')
+    status = Column(Enum('active', 'inactive'), default='active')
+    last_login = Column(DateTime)
+    created_at = Column(DateTime, default=func.now())
+    updated_at = Column(DateTime, default=func.now(), onupdate=func.now())
\ No newline at end of file
diff --git a/fastapi-backend/app/schemas/user.py b/fastapi-backend/app/schemas/user.py
new file mode 100644
index 0000000..9fabbd9
--- /dev/null
+++ b/fastapi-backend/app/schemas/user.py
@@ -0,0 +1,167 @@
+from datetime import datetime
+from typing import Optional, List
+from pydantic import BaseModel, EmailStr, Field, validator
+
+
+# 用户基础模式
+class UserBase(BaseModel):
+    username: Optional[str] = None
+    email: Optional[EmailStr] = None
+    phone: Optional[str] = None
+    user_type: Optional[str] = None
+    real_name: Optional[str] = None
+    nickname: Optional[str] = None
+    avatar_url: Optional[str] = None
+    gender: Optional[str] = None
+    birthday: Optional[datetime] = None
+
+
+# 创建用户请求模式
+class UserCreate(BaseModel):
+    username: str = Field(..., min_length=3, max_length=50)
+    password: str = Field(..., min_length=6)
+    email: Optional[EmailStr] = None
+    phone: Optional[str] = None
+    real_name: Optional[str] = None
+    nickname: Optional[str] = None
+    user_type: str = "farmer"
+
+
+# 更新用户请求模式
+class UserUpdate(BaseModel):
+    nickname: Optional[str] = None
+    avatar_url: Optional[str] = None
+    gender: Optional[str] = None
+    birthday: Optional[datetime] = None
+    email: Optional[EmailStr] = None
+    phone: Optional[str] = None
+
+
+# 用户登录请求模式
+class UserLogin(BaseModel):
+    username: str
+    password: str
+
+
+# 密码更改请求模式
+class PasswordChange(BaseModel):
+    current_password: str
+    new_password: str = Field(..., min_length=6)
+
+
+# 用户响应模式
+class UserResponse(UserBase):
+    id: int
+    status: str
+    created_at: datetime
+    updated_at: datetime
+    last_login: Optional[datetime] = None
+
+    class Config:
+        orm_mode = True
+
+
+# 带令牌的用户响应模式
+class UserWithToken(BaseModel):
+    user: UserResponse
+    token: str
+    refresh_token: Optional[str] = None
+
+
+# 令牌响应模式
+class Token(BaseModel):
+    access_token: str
+    refresh_token: str
+    token_type: str = "bearer"
+
+
+# 令牌数据模式
+class TokenPayload(BaseModel):
+    sub: Optional[int] = None
+    exp: Optional[int] = None
+    type: Optional[str] = None
+
+
+# 管理员基础模式
+class AdminBase(BaseModel):
+    username: str
+    email: Optional[EmailStr] = None
+    nickname: Optional[str] = None
+    avatar: Optional[str] = None
+    role: str = "admin"
+
+
+# 创建管理员请求模式
+class AdminCreate(AdminBase):
+    password: str = Field(..., min_length=6)
+
+
+# 更新管理员请求模式
+class AdminUpdate(BaseModel):
+    nickname: Optional[str] = None
+    avatar: Optional[str] = None
+    email: Optional[EmailStr] = None
+    role: Optional[str] = None
+    status: Optional[str] = None
+
+
+# 管理员响应模式
+class AdminResponse(AdminBase):
+    id: int
+    status: str
+    created_at: datetime
+    updated_at: datetime
+    last_login: Optional[datetime] = None
+
+    class Config:
+        orm_mode = True
+
+
+# 带令牌的管理员响应模式
+class AdminWithToken(BaseModel):
+    admin: AdminResponse
+    token: str
+    refresh_token: Optional[str] = None
+
+
+# 微信登录请求模式
+class WechatLogin(BaseModel):
+    code: str
+    user_info: Optional[dict] = None
+
+
+# 分页响应模式
+class PaginationResponse(BaseModel):
+    page: int
+    page_size: int
+    total: int
+    total_pages: int
+
+
+# 用户列表响应模式
+class UserListResponse(BaseModel):
+    users: List[UserResponse]
+    pagination: PaginationResponse
+
+
+# 用户统计响应模式
+class UserStatistics(BaseModel):
+    total_users: int
+    farmers: int
+    merchants: int
+    admins: int
+    active_users: int
+    inactive_users: int
+    date: Optional[datetime] = None
+
+
+# 批量更新用户状态请求模式
+class BatchUserStatusUpdate(BaseModel):
+    user_ids: List[int]
+    status: str
+
+    @validator("status")
+    def validate_status(cls, v):
+        if v not in ["active", "inactive"]:
+            raise ValueError("状态必须是 'active' 或 'inactive'")
+        return v
\ No newline at end of file
diff --git a/fastapi-backend/app/utils/errors.py b/fastapi-backend/app/utils/errors.py
new file mode 100644
index 0000000..599d063
--- /dev/null
+++ b/fastapi-backend/app/utils/errors.py
@@ -0,0 +1,59 @@
+from fastapi import HTTPException, status
+
+
+class AppError(HTTPException):
+    """
+    应用程序自定义错误类
+    """
+    def __init__(
+        self,
+        detail: str,
+        status_code: int = status.HTTP_400_BAD_REQUEST,
+        headers: dict = None
+    ):
+        super().__init__(status_code=status_code, detail=detail, headers=headers)
+
+
+# 常用错误
+class NotFoundError(AppError):
+    """
+    资源未找到错误
+    """
+    def __init__(self, detail: str = "资源未找到"):
+        super().__init__(detail=detail, status_code=status.HTTP_404_NOT_FOUND)
+
+
+class UnauthorizedError(AppError):
+    """
+    未授权错误
+    """
+    def __init__(self, detail: str = "未授权"):
+        super().__init__(
+            detail=detail,
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            headers={"WWW-Authenticate": "Bearer"}
+        )
+
+
+class ForbiddenError(AppError):
+    """
+    禁止访问错误
+    """
+    def __init__(self, detail: str = "禁止访问"):
+        super().__init__(detail=detail, status_code=status.HTTP_403_FORBIDDEN)
+
+
+class BadRequestError(AppError):
+    """
+    请求参数错误
+    """
+    def __init__(self, detail: str = "请求参数错误"):
+        super().__init__(detail=detail, status_code=status.HTTP_400_BAD_REQUEST)
+
+
+class ConflictError(AppError):
+    """
+    资源冲突错误
+    """
+    def __init__(self, detail: str = "资源冲突"):
+        super().__init__(detail=detail, status_code=status.HTTP_409_CONFLICT)
\ No newline at end of file
diff --git a/fastapi-backend/app/utils/response.py b/fastapi-backend/app/utils/response.py
new file mode 100644
index 0000000..9d33794
--- /dev/null
+++ b/fastapi-backend/app/utils/response.py
@@ -0,0 +1,43 @@
+from typing import Any, Dict, Optional
+
+
+def success_response(
+    data: Any = None,
+    message: Optional[str] = None,
+    code: int = 200
+) -> Dict[str, Any]:
+    """
+    标准成功响应格式
+    """
+    response = {
+        "success": True,
+        "code": code
+    }
+    
+    if data is not None:
+        response["data"] = data
+    
+    if message:
+        response["message"] = message
+    
+    return response
+
+
+def error_response(
+    message: str,
+    code: int = 400,
+    data: Any = None
+) -> Dict[str, Any]:
+    """
+    标准错误响应格式
+    """
+    response = {
+        "success": False,
+        "code": code,
+        "message": message
+    }
+    
+    if data is not None:
+        response["data"] = data
+    
+    return response
\ No newline at end of file
diff --git a/fastapi-backend/main.py b/fastapi-backend/main.py
new file mode 100644
index 0000000..cbf0984
--- /dev/null
+++ b/fastapi-backend/main.py
@@ -0,0 +1,15 @@
+import uvicorn
+from app.core.config import settings
+from app.api.api import app as application
+
+# 导出应用实例
+app = application
+
+if __name__ == "__main__":
+    uvicorn.run(
+        "app.api.api:app",
+        host=settings.HOST,
+        port=settings.PORT,
+        reload=settings.DEBUG,
+        log_level="info"
+    )
\ No newline at end of file
diff --git a/fastapi-backend/migrations/env.py b/fastapi-backend/migrations/env.py
new file mode 100644
index 0000000..064d073
--- /dev/null
+++ b/fastapi-backend/migrations/env.py
@@ -0,0 +1,74 @@
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# 导入模型
+from app.models.user import Base
+
+# 导入配置
+from app.core.config import settings
+
+# 这是Alembic Config对象，它提供对.ini文件中值的访问
+config = context.config
+
+# 解释配置文件并设置日志记录器
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# 添加你的模型元数据对象
+target_metadata = Base.metadata
+
+# 其他值来自config，可以通过以下方式定义：
+# my_important_option = config.get_main_option("my_important_option")
+# ... 等等。
+
+
+def run_migrations_offline() -> None:
+    """在'offline'模式下运行迁移。
+
+    这配置了上下文，只需要一个URL，并且不要求引擎可用。
+    跳过引擎创建，甚至不需要DBAPI可用。
+
+    调用context.execute()来执行迁移。
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """在'online'模式下运行迁移。
+
+    在这种情况下，我们创建了一个Engine并将其与迁移上下文关联。
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()
\ No newline at end of file
diff --git a/fastapi-backend/requirements.txt b/fastapi-backend/requirements.txt
new file mode 100644
index 0000000..86c38d8
--- /dev/null
+++ b/fastapi-backend/requirements.txt
@@ -0,0 +1,16 @@
+fastapi==0.110.0
+uvicorn==0.27.1
+pydantic==2.6.1
+pydantic-settings==2.1.0
+sqlalchemy==2.0.27
+pymysql==1.1.0
+cryptography==42.0.2
+python-jose==3.3.0
+passlib==1.7.4
+python-multipart==0.0.9
+email-validator==2.1.0
+python-dotenv==1.0.1
+alembic==1.13.1
+pytest==7.4.3
+httpx==0.26.0
+bcrypt==4.1.2
\ No newline at end of file