diff --git a/src/common/database/database.py b/src/common/database/database.py
index 6a34d900e..1815a98ff 100644
--- a/src/common/database/database.py
+++ b/src/common/database/database.py
@@ -1,6 +1,4 @@
 import os
-from pymongo import MongoClient
-from pymongo.database import Database
 from rich.traceback import install
 from src.common.logger import get_logger
 
@@ -10,8 +8,6 @@ from src.common.database.sqlalchemy_models import get_engine, get_db_session
 
 install(extra_lines=3)
 
-_client = None
-_db = None
 _sql_engine = None
 
 logger = get_logger("database")
@@ -64,43 +60,6 @@ class SQLAlchemyTransaction:
 db = DatabaseProxy()
 
 
-def __create_database_instance():
-    uri = os.getenv("MONGODB_URI")
-    host = os.getenv("MONGODB_HOST", "127.0.0.1")
-    port = int(os.getenv("MONGODB_PORT", "27017"))
-    # db_name 变量在创建连接时不需要，在获取数据库实例时才使用
-    username = os.getenv("MONGODB_USERNAME")
-    password = os.getenv("MONGODB_PASSWORD")
-    auth_source = os.getenv("MONGODB_AUTH_SOURCE")
-
-    if uri:
-        # 支持标准mongodb://和mongodb+srv://连接字符串
-        if uri.startswith(("mongodb://", "mongodb+srv://")):
-            return MongoClient(uri)
-        else:
-            raise ValueError(
-                "Invalid MongoDB URI format. URI must start with 'mongodb://' or 'mongodb+srv://'. "
-                "For MongoDB Atlas, use 'mongodb+srv://' format. "
-                "See: https://www.mongodb.com/docs/manual/reference/connection-string/"
-            )
-
-    if username and password:
-        # 如果有用户名和密码，使用认证连接
-        return MongoClient(host, port, username=username, password=password, authSource=auth_source)
-
-    # 否则使用无认证连接
-    return MongoClient(host, port)
-
-
-def get_db():
-    """获取MongoDB连接实例，延迟初始化。"""
-    global _client, _db
-    if _client is None:
-        _client = __create_database_instance()
-        _db = _client[os.getenv("DATABASE_NAME", "MegBot")]
-    return _db
-
-
 async def initialize_sql_database(database_config):
     """
     根据配置初始化SQL数据库连接（SQLAlchemy版本）
@@ -141,17 +100,3 @@ async def initialize_sql_database(database_config):
     except Exception as e:
         logger.error(f"初始化SQL数据库失败: {e}")
         return None
-
-
-class DBWrapper:
-    """数据库代理类，保持接口兼容性同时实现懒加载。"""
-
-    def __getattr__(self, name):
-        return getattr(get_db(), name)
-
-    def __getitem__(self, key):
-        return get_db()[key]  # type: ignore
-
-
-# 全局MongoDB数据库访问点
-memory_db: Database = DBWrapper()  # type: ignore