diff --git a/python_core/database/user.py b/python_core/database/user.py
index 601501b..1c13722 100644
--- a/python_core/database/user.py
+++ b/python_core/database/user.py
@@ -1,9 +1,479 @@
 # 用户表
 
-from python_core.kv import kv
+import hashlib
+import uuid
+from typing import Dict, List, Any, Optional
+from datetime import datetime
 from .db import Db
-class UserDb(Db):
+from python_core.utils.logger import setup_logger
+
+logger = setup_logger(__name__)
+
+class UserTable(Db):
+    """
+    用户表类
+    基于Db类实现的用户管理功能
+    """
+
     def __init__(self):
-        self.key = "model"
-        self.users = self.kv.get(self.key)
-        pass
\ No newline at end of file
+        # 使用固定的数据库键
+        super().__init__("user_system")
+        self.table_name = "users"
+
+        # 初始化用户表
+        self._init_user_table()
+
+    def _init_user_table(self):
+        """初始化用户表"""
+        try:
+            # 检查用户表是否存在，不存在则创建
+            if not self._table_exists(self.table_name):
+                schema = {
+                    "username": "string",
+                    "email": "string",
+                    "password_hash": "string",
+                    "display_name": "string",
+                    "avatar_url": "string",
+                    "is_active": "boolean",
+                    "last_login": "datetime",
+                    "created_at": "datetime",
+                    "updated_at": "datetime"
+                }
+
+                self.create_table(self.table_name, schema)
+                logger.info("User table initialized")
+            else:
+                logger.info("User table already exists")
+
+        except Exception as e:
+            logger.error(f"Failed to initialize user table: {e}")
+            raise e
+
+    def _hash_password(self, password: str) -> str:
+        """密码哈希"""
+        return hashlib.sha256(password.encode()).hexdigest()
+
+    def _verify_password(self, password: str, password_hash: str) -> bool:
+        """验证密码"""
+        return self._hash_password(password) == password_hash
+
+    def create_user(self, username: str, email: str, password: str, display_name: str = None) -> str:
+        """
+        创建用户
+
+        Args:
+            username: 用户名
+            email: 邮箱
+            password: 密码
+            display_name: 显示名称
+
+        Returns:
+            用户ID
+        """
+        try:
+            # 检查用户名是否已存在
+            if self.get_user_by_username(username):
+                raise ValueError(f"Username '{username}' already exists")
+
+            # 检查邮箱是否已存在
+            if self.get_user_by_email(email):
+                raise ValueError(f"Email '{email}' already exists")
+
+            # 创建用户数据
+            user_data = {
+                "username": username,
+                "email": email,
+                "password_hash": self._hash_password(password),
+                "display_name": display_name or username,
+                "avatar_url": "",
+                "is_active": True,
+                "last_login": None,
+                "created_at": datetime.now().isoformat(),
+                "updated_at": datetime.now().isoformat()
+            }
+
+            # 插入用户记录
+            user_id = self.insert(self.table_name, user_data)
+
+            logger.info(f"Created user: {username} (ID: {user_id})")
+            return user_id
+
+        except Exception as e:
+            logger.error(f"Failed to create user '{username}': {e}")
+            raise e
+
+    def get_user_by_id(self, user_id: str) -> Optional[Dict[str, Any]]:
+        """
+        根据ID获取用户
+
+        Args:
+            user_id: 用户ID
+
+        Returns:
+            用户信息，如果不存在返回None
+        """
+        try:
+            record = self.get(self.table_name, user_id)
+            if record:
+                return {
+                    "id": record["id"],
+                    **record["data"],
+                    "created_at": record.get("created_at"),
+                    "updated_at": record.get("updated_at")
+                }
+            return None
+
+        except Exception as e:
+            logger.error(f"Failed to get user by ID '{user_id}': {e}")
+            return None
+
+    def get_user_by_username(self, username: str) -> Optional[Dict[str, Any]]:
+        """
+        根据用户名获取用户
+
+        Args:
+            username: 用户名
+
+        Returns:
+            用户信息，如果不存在返回None
+        """
+        try:
+            users = self.find_by_field(self.table_name, "username", username)
+            if users:
+                record = users[0]
+                return {
+                    "id": record["id"],
+                    **record["data"],
+                    "created_at": record.get("created_at"),
+                    "updated_at": record.get("updated_at")
+                }
+            return None
+
+        except Exception as e:
+            logger.error(f"Failed to get user by username '{username}': {e}")
+            return None
+
+    def get_user_by_email(self, email: str) -> Optional[Dict[str, Any]]:
+        """
+        根据邮箱获取用户
+
+        Args:
+            email: 邮箱
+
+        Returns:
+            用户信息，如果不存在返回None
+        """
+        try:
+            users = self.find_by_field(self.table_name, "email", email)
+            if users:
+                record = users[0]
+                return {
+                    "id": record["id"],
+                    **record["data"],
+                    "created_at": record.get("created_at"),
+                    "updated_at": record.get("updated_at")
+                }
+            return None
+
+        except Exception as e:
+            logger.error(f"Failed to get user by email '{email}': {e}")
+            return None
+
+    def authenticate_user(self, username_or_email: str, password: str) -> Optional[Dict[str, Any]]:
+        """
+        用户认证
+
+        Args:
+            username_or_email: 用户名或邮箱
+            password: 密码
+
+        Returns:
+            认证成功返回用户信息，失败返回None
+        """
+        try:
+            # 尝试按用户名查找
+            user = self.get_user_by_username(username_or_email)
+
+            # 如果按用户名找不到，尝试按邮箱查找
+            if not user:
+                user = self.get_user_by_email(username_or_email)
+
+            # 验证用户存在且密码正确
+            if user and self._verify_password(password, user["password_hash"]):
+                # 更新最后登录时间
+                self.update_last_login(user["id"])
+
+                # 返回用户信息（不包含密码哈希）
+                user_info = user.copy()
+                del user_info["password_hash"]
+
+                logger.info(f"User authenticated: {user['username']}")
+                return user_info
+
+            logger.warning(f"Authentication failed for: {username_or_email}")
+            return None
+
+        except Exception as e:
+            logger.error(f"Authentication error for '{username_or_email}': {e}")
+            return None
+
+    def update_user(self, user_id: str, updates: Dict[str, Any]) -> bool:
+        """
+        更新用户信息
+
+        Args:
+            user_id: 用户ID
+            updates: 要更新的字段
+
+        Returns:
+            更新成功返回True
+        """
+        try:
+            # 获取现有用户信息
+            existing_user = self.get_user_by_id(user_id)
+            if not existing_user:
+                logger.warning(f"User not found: {user_id}")
+                return False
+
+            # 准备更新数据
+            updated_data = existing_user.copy()
+
+            # 移除不应该直接更新的字段
+            protected_fields = ["id", "created_at", "password_hash"]
+            for field in protected_fields:
+                if field in updates:
+                    del updates[field]
+
+            # 应用更新
+            updated_data.update(updates)
+            updated_data["updated_at"] = datetime.now().isoformat()
+
+            # 移除元数据字段，只保留数据字段
+            data_fields = {k: v for k, v in updated_data.items()
+                          if k not in ["id", "created_at", "updated_at"]}
+
+            # 执行更新
+            result = self.update(self.table_name, user_id, data_fields)
+
+            if result:
+                logger.info(f"Updated user: {user_id}")
+
+            return result
+
+        except Exception as e:
+            logger.error(f"Failed to update user '{user_id}': {e}")
+            return False
+
+    def update_password(self, user_id: str, new_password: str) -> bool:
+        """
+        更新用户密码
+
+        Args:
+            user_id: 用户ID
+            new_password: 新密码
+
+        Returns:
+            更新成功返回True
+        """
+        try:
+            # 获取现有用户信息
+            existing_user = self.get_user_by_id(user_id)
+            if not existing_user:
+                logger.warning(f"User not found: {user_id}")
+                return False
+
+            # 更新密码哈希
+            updated_data = existing_user.copy()
+            updated_data["password_hash"] = self._hash_password(new_password)
+            updated_data["updated_at"] = datetime.now().isoformat()
+
+            # 移除元数据字段
+            data_fields = {k: v for k, v in updated_data.items()
+                          if k not in ["id", "created_at", "updated_at"]}
+
+            # 执行更新
+            result = self.update(self.table_name, user_id, data_fields)
+
+            if result:
+                logger.info(f"Password updated for user: {user_id}")
+
+            return result
+
+        except Exception as e:
+            logger.error(f"Failed to update password for user '{user_id}': {e}")
+            return False
+
+    def update_last_login(self, user_id: str) -> bool:
+        """
+        更新最后登录时间
+
+        Args:
+            user_id: 用户ID
+
+        Returns:
+            更新成功返回True
+        """
+        try:
+            return self.update_user(user_id, {
+                "last_login": datetime.now().isoformat()
+            })
+
+        except Exception as e:
+            logger.error(f"Failed to update last login for user '{user_id}': {e}")
+            return False
+
+    def deactivate_user(self, user_id: str) -> bool:
+        """
+        停用用户
+
+        Args:
+            user_id: 用户ID
+
+        Returns:
+            操作成功返回True
+        """
+        try:
+            return self.update_user(user_id, {"is_active": False})
+
+        except Exception as e:
+            logger.error(f"Failed to deactivate user '{user_id}': {e}")
+            return False
+
+    def activate_user(self, user_id: str) -> bool:
+        """
+        激活用户
+
+        Args:
+            user_id: 用户ID
+
+        Returns:
+            操作成功返回True
+        """
+        try:
+            return self.update_user(user_id, {"is_active": True})
+
+        except Exception as e:
+            logger.error(f"Failed to activate user '{user_id}': {e}")
+            return False
+
+    def delete_user(self, user_id: str) -> bool:
+        """
+        删除用户
+
+        Args:
+            user_id: 用户ID
+
+        Returns:
+            删除成功返回True
+        """
+        try:
+            result = self.delete(self.table_name, user_id)
+
+            if result:
+                logger.info(f"Deleted user: {user_id}")
+
+            return result
+
+        except Exception as e:
+            logger.error(f"Failed to delete user '{user_id}': {e}")
+            return False
+
+    def get_all_users(self, include_inactive: bool = False, limit: int = 100) -> List[Dict[str, Any]]:
+        """
+        获取所有用户
+
+        Args:
+            include_inactive: 是否包含非活跃用户
+            limit: 最大返回数量
+
+        Returns:
+            用户列表
+        """
+        try:
+            all_records = self.find_all(self.table_name, limit)
+
+            users = []
+            for record in all_records:
+                user_info = {
+                    "id": record["id"],
+                    **record["data"],
+                    "created_at": record.get("created_at"),
+                    "updated_at": record.get("updated_at")
+                }
+
+                # 移除密码哈希
+                if "password_hash" in user_info:
+                    del user_info["password_hash"]
+
+                # 根据活跃状态过滤
+                if include_inactive or user_info.get("is_active", True):
+                    users.append(user_info)
+
+            return users
+
+        except Exception as e:
+            logger.error(f"Failed to get all users: {e}")
+            return []
+
+    def get_user_count(self, include_inactive: bool = False) -> int:
+        """
+        获取用户数量
+
+        Args:
+            include_inactive: 是否包含非活跃用户
+
+        Returns:
+            用户数量
+        """
+        try:
+            if include_inactive:
+                return self.count(self.table_name)
+            else:
+                # 获取活跃用户数量（简单实现，可优化）
+                active_users = self.get_all_users(include_inactive=False)
+                return len(active_users)
+
+        except Exception as e:
+            logger.error(f"Failed to get user count: {e}")
+            return 0
+
+    def search_users(self, query: str, limit: int = 50) -> List[Dict[str, Any]]:
+        """
+        搜索用户
+
+        Args:
+            query: 搜索关键词（匹配用户名、邮箱、显示名称）
+            limit: 最大返回数量
+
+        Returns:
+            匹配的用户列表
+        """
+        try:
+            all_users = self.get_all_users(include_inactive=True, limit=limit * 2)
+
+            matching_users = []
+            query_lower = query.lower()
+
+            for user in all_users:
+                if len(matching_users) >= limit:
+                    break
+
+                # 检查用户名、邮箱、显示名称是否匹配
+                username = user.get("username", "").lower()
+                email = user.get("email", "").lower()
+                display_name = user.get("display_name", "").lower()
+
+                if (query_lower in username or
+                    query_lower in email or
+                    query_lower in display_name):
+                    matching_users.append(user)
+
+            return matching_users
+
+        except Exception as e:
+            logger.error(f"Failed to search users with query '{query}': {e}")
+            return []
+
+
+# 创建全局用户表实例
+user_table = UserTable()
\ No newline at end of file
diff --git a/python_core/kv.py b/python_core/kv.py
index efe616e..639384a 100644
--- a/python_core/kv.py
+++ b/python_core/kv.py
@@ -154,7 +154,30 @@ class Kv:
         except Exception as e:
             logger.error(f"An unexpected error occurred while bulk setting keys: {e}")
             raise e
-       
+
+    def gets(self, keys: list[str]):
+        """
+        批量获取多个键的值
+
+        Args:
+            keys: 要获取的键列表
+
+        Returns:
+            包含键值对的字典
+        """
+        try:
+            # 由于Cloudflare KV的批量获取API有问题，我们使用单个获取的方式
+            result = {}
+            for key in keys:
+                value = self.get(key)
+                if value is not None:
+                    result[key] = value
+            return result
+
+        except Exception as e:
+            logger.error(f"An error occurred while bulk getting keys from cloudflare: {e}")
+            raise e
+
     def removes(self, keys: list[str]):
         """
         批量删除多个键