diff --git a/bot.py b/bot.py
index 36d621a6e..8d51cee3c 100644
--- a/bot.py
+++ b/bot.py
@@ -12,6 +12,8 @@ from loguru import logger
 from nonebot.adapters.onebot.v11 import Adapter
 import platform
 
+from src.common.database import Database
+
 # 获取没有加载env时的环境变量
 env_mask = {key: os.getenv(key) for key in os.environ}
 
@@ -96,6 +98,17 @@ def load_env():
         logger.error(f"ENVIRONMENT 配置错误，请检查 .env 文件中的 ENVIRONMENT 变量及对应 .env.{env} 是否存在")
         RuntimeError(f"ENVIRONMENT 配置错误，请检查 .env 文件中的 ENVIRONMENT 变量及对应 .env.{env} 是否存在")
 
+def init_database():
+    Database.initialize(
+        uri=os.getenv("MONGODB_URI"),
+        host=os.getenv("MONGODB_HOST", "127.0.0.1"),
+        port=int(os.getenv("MONGODB_PORT", "27017")),
+        db_name=os.getenv("DATABASE_NAME", "MegBot"),
+        username=os.getenv("MONGODB_USERNAME"),
+        password=os.getenv("MONGODB_PASSWORD"),
+        auth_source=os.getenv("MONGODB_AUTH_SOURCE"),
+    )
+    
 
 def load_logger():
     logger.remove()  # 移除默认配置
@@ -198,6 +211,7 @@ def raw_main():
     init_config()
     init_env()
     load_env()
+    init_database() # 加载完成环境后初始化database
     load_logger()
 
     env_config = {key: os.getenv(key) for key in os.environ}
@@ -223,7 +237,6 @@ def raw_main():
 
 
 if __name__ == "__main__":
-
     try:
         raw_main()
 
diff --git a/src/common/database.py b/src/common/database.py
index f0954b07c..9d9a596d1 100644
--- a/src/common/database.py
+++ b/src/common/database.py
@@ -1,7 +1,7 @@
 from typing import Optional
 
 from pymongo import MongoClient
-
+from pymongo.database import Database as MongoDatabase
 
 class Database:
     _instance: Optional["Database"] = None
@@ -27,7 +27,7 @@ class Database:
         else:
             # 否则使用无认证连接
             self.client = MongoClient(host, port)
-        self.db = self.client[db_name]
+        self.db: MongoDatabase = self.client[db_name]
         
     @classmethod
     def initialize(
@@ -39,18 +39,18 @@ class Database:
         password: Optional[str] = None,
         auth_source: Optional[str] = None,
         uri: Optional[str] = None,
-    ) -> "Database":
+    ) -> MongoDatabase:
         if cls._instance is None:
             cls._instance = cls(
                 host, port, db_name, username, password, auth_source, uri
             )
-        return cls._instance
+        return cls._instance.db
         
     @classmethod
-    def get_instance(cls) -> "Database":
+    def get_instance(cls) -> MongoDatabase:
         if cls._instance is None:
             raise RuntimeError("Database not initialized")
-        return cls._instance
+        return cls._instance.db
 
 
     #测试用
diff --git a/src/gui/reasoning_gui.py b/src/gui/reasoning_gui.py
index e131658b8..84b95adaf 100644
--- a/src/gui/reasoning_gui.py
+++ b/src/gui/reasoning_gui.py
@@ -46,7 +46,7 @@ class ReasoningGUI:
 
         # 初始化数据库连接
         try:
-            self.db = Database.get_instance().db
+            self.db = Database.get_instance()
             logger.success("数据库连接成功")
         except RuntimeError:
             logger.warning("数据库未初始化，正在尝试初始化...")
@@ -60,7 +60,7 @@ class ReasoningGUI:
                     password=os.getenv("MONGODB_PASSWORD"),
                     auth_source=os.getenv("MONGODB_AUTH_SOURCE"),
                 )
-                self.db = Database.get_instance().db
+                self.db = Database.get_instance()
                 logger.success("数据库初始化成功")
             except Exception:
                 logger.exception("数据库初始化失败")
diff --git a/src/plugins/chat/__init__.py b/src/plugins/chat/__init__.py
index ec3d4f01d..8ae525708 100644
--- a/src/plugins/chat/__init__.py
+++ b/src/plugins/chat/__init__.py
@@ -32,18 +32,6 @@ _message_manager_started = False
 driver = get_driver()
 config = driver.config
 
-Database.initialize(
-    uri=os.getenv("MONGODB_URI"),
-    host=os.getenv("MONGODB_HOST", "127.0.0.1"),
-    port=int(os.getenv("MONGODB_PORT", "27017")),
-    db_name=os.getenv("DATABASE_NAME", "MegBot"),
-    username=os.getenv("MONGODB_USERNAME"),
-    password=os.getenv("MONGODB_PASSWORD"),
-    auth_source=os.getenv("MONGODB_AUTH_SOURCE"),
-)
-logger.success("初始化数据库成功")
-
-
 # 初始化表情管理器
 emoji_manager.initialize()
 
diff --git a/src/plugins/chat/chat_stream.py b/src/plugins/chat/chat_stream.py
index bee679173..3ccd03f81 100644
--- a/src/plugins/chat/chat_stream.py
+++ b/src/plugins/chat/chat_stream.py
@@ -111,11 +111,11 @@ class ChatManager:
 
     def _ensure_collection(self):
         """确保数据库集合存在并创建索引"""
-        if "chat_streams" not in self.db.db.list_collection_names():
-            self.db.db.create_collection("chat_streams")
+        if "chat_streams" not in self.db.list_collection_names():
+            self.db.create_collection("chat_streams")
             # 创建索引
-            self.db.db.chat_streams.create_index([("stream_id", 1)], unique=True)
-            self.db.db.chat_streams.create_index(
+            self.db.chat_streams.create_index([("stream_id", 1)], unique=True)
+            self.db.chat_streams.create_index(
                 [("platform", 1), ("user_info.user_id", 1), ("group_info.group_id", 1)]
             )
 
@@ -168,7 +168,7 @@ class ChatManager:
             return stream
 
         # 检查数据库中是否存在
-        data = self.db.db.chat_streams.find_one({"stream_id": stream_id})
+        data = self.db.chat_streams.find_one({"stream_id": stream_id})
         if data:
             stream = ChatStream.from_dict(data)
             # 更新用户信息和群组信息
@@ -204,7 +204,7 @@ class ChatManager:
     async def _save_stream(self, stream: ChatStream):
         """保存聊天流到数据库"""
         if not stream.saved:
-            self.db.db.chat_streams.update_one(
+            self.db.chat_streams.update_one(
                 {"stream_id": stream.stream_id}, {"$set": stream.to_dict()}, upsert=True
             )
             stream.saved = True
@@ -216,7 +216,7 @@ class ChatManager:
 
     async def load_all_streams(self):
         """从数据库加载所有聊天流"""
-        all_streams = self.db.db.chat_streams.find({})
+        all_streams = self.db.chat_streams.find({})
         for data in all_streams:
             stream = ChatStream.from_dict(data)
             self.streams[stream.stream_id] = stream
diff --git a/src/plugins/chat/emoji_manager.py b/src/plugins/chat/emoji_manager.py
index 3adb952d3..1743571e9 100644
--- a/src/plugins/chat/emoji_manager.py
+++ b/src/plugins/chat/emoji_manager.py
@@ -76,16 +76,16 @@ class EmojiManager:
         
         没有索引的话,数据库每次查询都需要扫描全部数据,建立索引后可以大大提高查询效率。
         """
-        if 'emoji' not in self.db.db.list_collection_names():
-            self.db.db.create_collection('emoji')
-            self.db.db.emoji.create_index([('embedding', '2dsphere')])
-            self.db.db.emoji.create_index([('filename', 1)], unique=True)
+        if 'emoji' not in self.db.list_collection_names():
+            self.db.create_collection('emoji')
+            self.db.emoji.create_index([('embedding', '2dsphere')])
+            self.db.emoji.create_index([('filename', 1)], unique=True)
 
     def record_usage(self, emoji_id: str):
         """记录表情使用次数"""
         try:
             self._ensure_db()
-            self.db.db.emoji.update_one(
+            self.db.emoji.update_one(
                 {'_id': emoji_id},
                 {'$inc': {'usage_count': 1}}
             )
@@ -119,7 +119,7 @@ class EmojiManager:
 
             try:
                 # 获取所有表情包
-                all_emojis = list(self.db.db.emoji.find({}, {'_id': 1, 'path': 1, 'embedding': 1, 'description': 1}))
+                all_emojis = list(self.db.emoji.find({}, {'_id': 1, 'path': 1, 'embedding': 1, 'description': 1}))
 
                 if not all_emojis:
                     logger.warning("数据库中没有任何表情包")
@@ -157,7 +157,7 @@ class EmojiManager:
                 
                 if selected_emoji and 'path' in selected_emoji:
                     # 更新使用次数
-                    self.db.db.emoji.update_one(
+                    self.db.emoji.update_one(
                         {'_id': selected_emoji['_id']},
                         {'$inc': {'usage_count': 1}}
                     )
@@ -236,7 +236,7 @@ class EmojiManager:
                 image_hash = hashlib.md5(image_bytes).hexdigest()
                 
                 # 检查是否已经注册过
-                existing_emoji = self.db.db['emoji'].find_one({'filename': filename})
+                existing_emoji = self.db['emoji'].find_one({'filename': filename})
                 description = None
                 
                 if existing_emoji:
@@ -298,7 +298,7 @@ class EmojiManager:
                     }
                     
                     # 保存到emoji数据库
-                    self.db.db['emoji'].insert_one(emoji_record)
+                    self.db['emoji'].insert_one(emoji_record)
                     logger.success(f"注册新表情包: {filename}")
                     logger.info(f"描述: {description}")
                     
@@ -338,7 +338,7 @@ class EmojiManager:
         try:
             self._ensure_db()
             # 获取所有表情包记录
-            all_emojis = list(self.db.db.emoji.find())
+            all_emojis = list(self.db.emoji.find())
             removed_count = 0
             total_count = len(all_emojis)
 
@@ -346,13 +346,13 @@ class EmojiManager:
                 try:
                     if 'path' not in emoji:
                         logger.warning(f"发现无效记录（缺少path字段），ID: {emoji.get('_id', 'unknown')}")
-                        self.db.db.emoji.delete_one({'_id': emoji['_id']})
+                        self.db.emoji.delete_one({'_id': emoji['_id']})
                         removed_count += 1
                         continue
 
                     if 'embedding' not in emoji:
                         logger.warning(f"发现过时记录（缺少embedding字段），ID: {emoji.get('_id', 'unknown')}")
-                        self.db.db.emoji.delete_one({'_id': emoji['_id']})
+                        self.db.emoji.delete_one({'_id': emoji['_id']})
                         removed_count += 1
                         continue
 
@@ -360,7 +360,7 @@ class EmojiManager:
                     if not os.path.exists(emoji['path']):
                         logger.warning(f"表情包文件已被删除: {emoji['path']}")
                         # 从数据库中删除记录
-                        result = self.db.db.emoji.delete_one({'_id': emoji['_id']})
+                        result = self.db.emoji.delete_one({'_id': emoji['_id']})
                         if result.deleted_count > 0:
                             logger.debug(f"成功删除数据库记录: {emoji['_id']}")
                             removed_count += 1
@@ -371,7 +371,7 @@ class EmojiManager:
                     continue
 
             # 验证清理结果
-            remaining_count = self.db.db.emoji.count_documents({})
+            remaining_count = self.db.emoji.count_documents({})
             if removed_count > 0:
                 logger.success(f"已清理 {removed_count} 个失效的表情包记录")
                 logger.info(f"清理前总数: {total_count} | 清理后总数: {remaining_count}")
diff --git a/src/plugins/chat/llm_generator.py b/src/plugins/chat/llm_generator.py
index af7334afe..285ea59b7 100644
--- a/src/plugins/chat/llm_generator.py
+++ b/src/plugins/chat/llm_generator.py
@@ -154,7 +154,7 @@ class ResponseGenerator:
         reasoning_content: str,
     ):
         """保存对话记录到数据库"""
-        self.db.db.reasoning_logs.insert_one(
+        self.db.reasoning_logs.insert_one(
             {
                 "time": time.time(),
                 "chat_id": message.chat_stream.stream_id,
diff --git a/src/plugins/chat/prompt_builder.py b/src/plugins/chat/prompt_builder.py
index fec6c7926..ea3da777a 100644
--- a/src/plugins/chat/prompt_builder.py
+++ b/src/plugins/chat/prompt_builder.py
@@ -311,7 +311,7 @@ class PromptBuilder:
             {"$project": {"content": 1, "similarity": 1}}
         ]
 
-        results = list(self.db.db.knowledges.aggregate(pipeline))
+        results = list(self.db.knowledges.aggregate(pipeline))
         # print(f"\033[1;34m[调试]\033[0m获取知识库内容结果: {results}")
 
         if not results:
diff --git a/src/plugins/chat/relationship_manager.py b/src/plugins/chat/relationship_manager.py
index 9e7cafda0..baebb1fe8 100644
--- a/src/plugins/chat/relationship_manager.py
+++ b/src/plugins/chat/relationship_manager.py
@@ -169,7 +169,7 @@ class RelationshipManager:
     async def load_all_relationships(self):
         """加载所有关系对象"""
         db = Database.get_instance()
-        all_relationships = db.db.relationships.find({})
+        all_relationships = db.relationships.find({})
         for data in all_relationships:
             await self.load_relationship(data)
 
@@ -177,7 +177,7 @@ class RelationshipManager:
         """每5分钟自动保存一次关系数据"""
         db = Database.get_instance()
         # 获取所有关系记录
-        all_relationships = db.db.relationships.find({})
+        all_relationships = db.relationships.find({})
         # 依次加载每条记录
         for data in all_relationships:
             await self.load_relationship(data)
@@ -207,7 +207,7 @@ class RelationshipManager:
         saved = relationship.saved
 
         db = Database.get_instance()
-        db.db.relationships.update_one(
+        db.relationships.update_one(
             {'user_id': user_id, 'platform': platform},
             {'$set': {
                 'platform': platform,
diff --git a/src/plugins/chat/storage.py b/src/plugins/chat/storage.py
index f403b2c8b..dc03e4ced 100644
--- a/src/plugins/chat/storage.py
+++ b/src/plugins/chat/storage.py
@@ -25,7 +25,7 @@ class MessageStorage:
                     "detailed_plain_text": message.detailed_plain_text,
                     "topic": topic,
                 }
-            self.db.db.messages.insert_one(message_data)
+            self.db.messages.insert_one(message_data)
         except Exception:
             logger.exception("存储消息失败")
 
diff --git a/src/plugins/chat/utils_image.py b/src/plugins/chat/utils_image.py
index 25f23359b..ddb3b04cd 100644
--- a/src/plugins/chat/utils_image.py
+++ b/src/plugins/chat/utils_image.py
@@ -44,20 +44,20 @@ class ImageManager:
         
     def _ensure_image_collection(self):
         """确保images集合存在并创建索引"""
-        if 'images' not in self.db.db.list_collection_names():
-            self.db.db.create_collection('images')
+        if 'images' not in self.db.list_collection_names():
+            self.db.create_collection('images')
             # 创建索引
-            self.db.db.images.create_index([('hash', 1)], unique=True)
-            self.db.db.images.create_index([('url', 1)])
-            self.db.db.images.create_index([('path', 1)])
+            self.db.images.create_index([('hash', 1)], unique=True)
+            self.db.images.create_index([('url', 1)])
+            self.db.images.create_index([('path', 1)])
 
     def _ensure_description_collection(self):
         """确保image_descriptions集合存在并创建索引"""
-        if 'image_descriptions' not in self.db.db.list_collection_names():
-            self.db.db.create_collection('image_descriptions')
+        if 'image_descriptions' not in self.db.list_collection_names():
+            self.db.create_collection('image_descriptions')
             # 创建索引
-            self.db.db.image_descriptions.create_index([('hash', 1)], unique=True)
-            self.db.db.image_descriptions.create_index([('type', 1)])
+            self.db.image_descriptions.create_index([('hash', 1)], unique=True)
+            self.db.image_descriptions.create_index([('type', 1)])
 
     def _get_description_from_db(self, image_hash: str, description_type: str) -> Optional[str]:
         """从数据库获取图片描述
@@ -69,7 +69,7 @@ class ImageManager:
         Returns:
             Optional[str]: 描述文本，如果不存在则返回None
         """
-        result= self.db.db.image_descriptions.find_one({
+        result= self.db.image_descriptions.find_one({
             'hash': image_hash,
             'type': description_type
         })
@@ -83,7 +83,7 @@ class ImageManager:
             description: 描述文本
             description_type: 描述类型 ('emoji' 或 'image')
         """
-        self.db.db.image_descriptions.update_one(
+        self.db.image_descriptions.update_one(
             {'hash': image_hash, 'type': description_type},
             {
                 '$set': {
@@ -125,7 +125,7 @@ class ImageManager:
             image_hash = hashlib.md5(image_bytes).hexdigest()
             
             # 查重
-            existing = self.db.db.images.find_one({'hash': image_hash})
+            existing = self.db.images.find_one({'hash': image_hash})
             if existing:
                 return existing['path']
                 
@@ -146,7 +146,7 @@ class ImageManager:
                 'description': description,
                 'timestamp': timestamp
             }
-            self.db.db.images.insert_one(image_doc)
+            self.db.images.insert_one(image_doc)
             
             return file_path
             
@@ -163,7 +163,7 @@ class ImageManager:
         """
         try:
             # 先查找是否已存在
-            existing = self.db.db.images.find_one({'url': url})
+            existing = self.db.images.find_one({'url': url})
             if existing:
                 return existing['path']
                 
@@ -207,7 +207,7 @@ class ImageManager:
         Returns:
             bool: 是否存在
         """
-        return self.db.db.images.find_one({'url': url}) is not None
+        return self.db.images.find_one({'url': url}) is not None
         
     def check_hash_exists(self, image_data: Union[str, bytes], is_base64: bool = False) -> bool:
         """检查图像是否已存在
@@ -230,7 +230,7 @@ class ImageManager:
                     return False
                     
             image_hash = hashlib.md5(image_bytes).hexdigest()
-            return self.db.db.images.find_one({'hash': image_hash}) is not None
+            return self.db.images.find_one({'hash': image_hash}) is not None
             
         except Exception as e:
             logger.error(f"检查哈希失败: {str(e)}")
@@ -273,7 +273,7 @@ class ImageManager:
                         'description': description,
                         'timestamp': timestamp
                     }
-                    self.db.db.images.update_one(
+                    self.db.images.update_one(
                         {'hash': image_hash},
                         {'$set': image_doc},
                         upsert=True
@@ -330,7 +330,7 @@ class ImageManager:
                         'description': description,
                         'timestamp': timestamp
                     }
-                    self.db.db.images.update_one(
+                    self.db.images.update_one(
                         {'hash': image_hash},
                         {'$set': image_doc},
                         upsert=True
diff --git a/src/plugins/knowledege/knowledge_library.py b/src/plugins/knowledege/knowledge_library.py
index e9d7167fd..1bebf0930 100644
--- a/src/plugins/knowledege/knowledge_library.py
+++ b/src/plugins/knowledege/knowledge_library.py
@@ -17,17 +17,6 @@ load_dotenv(env_path)
 
 from src.common.database import Database
 
-# 从环境变量获取配置
-Database.initialize(
-    uri=os.getenv("MONGODB_URI"),
-    host=os.getenv("MONGODB_HOST", "127.0.0.1"),
-    port=int(os.getenv("MONGODB_PORT", "27017")),
-    db_name=os.getenv("DATABASE_NAME", "MegBot"),
-    username=os.getenv("MONGODB_USERNAME"),
-    password=os.getenv("MONGODB_PASSWORD"),
-    auth_source=os.getenv("MONGODB_AUTH_SOURCE"),
-)
-
 class KnowledgeLibrary:
     def __init__(self):
         self.db = Database.get_instance()
@@ -72,7 +61,7 @@ class KnowledgeLibrary:
         """处理单个文件"""
         try:
             # 检查文件是否已处理
-            if self.db.db.processed_files.find_one({"file_path": file_path}):
+            if self.db.processed_files.find_one({"file_path": file_path}):
                 print(f"文件已处理过，跳过: {file_path}")
                 return
                 
@@ -104,14 +93,14 @@ class KnowledgeLibrary:
                 content_hash = hash(segment)
                 
                 # 更新或插入文档
-                self.db.db.knowledges.update_one(
+                self.db.knowledges.update_one(
                     {"content_hash": content_hash},
                     {"$set": doc},
                     upsert=True
                 )
                 
             # 记录文件已处理
-            self.db.db.processed_files.insert_one({
+            self.db.processed_files.insert_one({
                 "file_path": file_path,
                 "processed_time": time.time()
             })
@@ -178,7 +167,7 @@ class KnowledgeLibrary:
             {"$project": {"content": 1, "similarity": 1, "file_path": 1}}
         ]
         
-        results = list(self.db.db.knowledges.aggregate(pipeline))
+        results = list(self.db.knowledges.aggregate(pipeline))
         return results
 
 # 创建单例实例
diff --git a/src/plugins/memory_system/draw_memory.py b/src/plugins/memory_system/draw_memory.py
index 9f15164f1..d6ba8f3b2 100644
--- a/src/plugins/memory_system/draw_memory.py
+++ b/src/plugins/memory_system/draw_memory.py
@@ -96,7 +96,7 @@ class Memory_graph:
             dot_data = {
                 "concept": node
             }
-            self.db.db.store_memory_dots.insert_one(dot_data)
+            self.db.store_memory_dots.insert_one(dot_data)
 
     @property
     def dots(self):
@@ -106,7 +106,7 @@ class Memory_graph:
     def get_random_chat_from_db(self, length: int, timestamp: str):
         # 从数据库中根据时间戳获取离其最近的聊天记录
         chat_text = ''
-        closest_record = self.db.db.messages.find_one({"time": {"$lte": timestamp}}, sort=[('time', -1)])  # 调试输出
+        closest_record = self.db.messages.find_one({"time": {"$lte": timestamp}}, sort=[('time', -1)])  # 调试输出
         logger.info(
             f"距离time最近的消息时间: {time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(closest_record['time'])))}")
 
@@ -115,7 +115,7 @@ class Memory_graph:
             group_id = closest_record['group_id']  # 获取groupid
             # 获取该时间戳之后的length条消息，且groupid相同
             chat_record = list(
-                self.db.db.messages.find({"time": {"$gt": closest_time}, "group_id": group_id}).sort('time', 1).limit(
+                self.db.messages.find({"time": {"$gt": closest_time}, "group_id": group_id}).sort('time', 1).limit(
                     length))
             for record in chat_record:
                 time_str = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(int(record['time'])))
@@ -130,34 +130,34 @@ class Memory_graph:
 
     def save_graph_to_db(self):
         # 清空现有的图数据
-        self.db.db.graph_data.delete_many({})
+        self.db.graph_data.delete_many({})
         # 保存节点
         for node in self.G.nodes(data=True):
             node_data = {
                 'concept': node[0],
                 'memory_items': node[1].get('memory_items', [])  # 默认为空列表
             }
-            self.db.db.graph_data.nodes.insert_one(node_data)
+            self.db.graph_data.nodes.insert_one(node_data)
         # 保存边
         for edge in self.G.edges():
             edge_data = {
                 'source': edge[0],
                 'target': edge[1]
             }
-            self.db.db.graph_data.edges.insert_one(edge_data)
+            self.db.graph_data.edges.insert_one(edge_data)
 
     def load_graph_from_db(self):
         # 清空当前图
         self.G.clear()
         # 加载节点
-        nodes = self.db.db.graph_data.nodes.find()
+        nodes = self.db.graph_data.nodes.find()
         for node in nodes:
             memory_items = node.get('memory_items', [])
             if not isinstance(memory_items, list):
                 memory_items = [memory_items] if memory_items else []
             self.G.add_node(node['concept'], memory_items=memory_items)
         # 加载边
-        edges = self.db.db.graph_data.edges.find()
+        edges = self.db.graph_data.edges.find()
         for edge in edges:
             self.G.add_edge(edge['source'], edge['target'])
 
diff --git a/src/plugins/memory_system/memory.py b/src/plugins/memory_system/memory.py
index c0b551b58..3c844c3ff 100644
--- a/src/plugins/memory_system/memory.py
+++ b/src/plugins/memory_system/memory.py
@@ -887,15 +887,6 @@ config = driver.config
 
 start_time = time.time()
 
-Database.initialize(
-    uri=os.getenv("MONGODB_URI"),
-    host=os.getenv("MONGODB_HOST", "127.0.0.1"),
-    port=int(os.getenv("MONGODB_PORT", "27017")),
-    db_name=os.getenv("DATABASE_NAME", "MegBot"),
-    username=os.getenv("MONGODB_USERNAME"),
-    password=os.getenv("MONGODB_PASSWORD"),
-    auth_source=os.getenv("MONGODB_AUTH_SOURCE"),
-)
 # 创建记忆图
 memory_graph = Memory_graph()
 # 创建海马体
diff --git a/src/plugins/models/utils_model.py b/src/plugins/models/utils_model.py
index 3424d662c..75b46f611 100644
--- a/src/plugins/models/utils_model.py
+++ b/src/plugins/models/utils_model.py
@@ -41,10 +41,10 @@ class LLM_request:
         """初始化数据库集合"""
         try:
             # 创建llm_usage集合的索引
-            self.db.db.llm_usage.create_index([("timestamp", 1)])
-            self.db.db.llm_usage.create_index([("model_name", 1)])
-            self.db.db.llm_usage.create_index([("user_id", 1)])
-            self.db.db.llm_usage.create_index([("request_type", 1)])
+            self.db.llm_usage.create_index([("timestamp", 1)])
+            self.db.llm_usage.create_index([("model_name", 1)])
+            self.db.llm_usage.create_index([("user_id", 1)])
+            self.db.llm_usage.create_index([("request_type", 1)])
         except Exception:
             logger.error("创建数据库索引失败")
 
@@ -73,7 +73,7 @@ class LLM_request:
                 "status": "success",
                 "timestamp": datetime.now()
             }
-            self.db.db.llm_usage.insert_one(usage_data)
+            self.db.llm_usage.insert_one(usage_data)
             logger.info(
                 f"Token使用情况 - 模型: {self.model_name}, "
                 f"用户: {user_id}, 类型: {request_type}, "
diff --git a/src/plugins/schedule/schedule_generator.py b/src/plugins/schedule/schedule_generator.py
index 12c6ce3b5..bde593890 100644
--- a/src/plugins/schedule/schedule_generator.py
+++ b/src/plugins/schedule/schedule_generator.py
@@ -14,16 +14,6 @@ from ..models.utils_model import LLM_request
 driver = get_driver()
 config = driver.config
 
-Database.initialize(
-    uri=os.getenv("MONGODB_URI"),
-    host=os.getenv("MONGODB_HOST", "127.0.0.1"),
-    port=int(os.getenv("MONGODB_PORT", "27017")),
-    db_name=os.getenv("DATABASE_NAME", "MegBot"),
-    username=os.getenv("MONGODB_USERNAME"),
-    password=os.getenv("MONGODB_PASSWORD"),
-    auth_source=os.getenv("MONGODB_AUTH_SOURCE"),
-)
-
 class ScheduleGenerator:
     def __init__(self):
         # 根据global_config.llm_normal这一字典配置指定模型
@@ -56,7 +46,7 @@ class ScheduleGenerator:
 
         schedule_text = str
 
-        existing_schedule = self.db.db.schedule.find_one({"date": date_str})
+        existing_schedule = self.db.schedule.find_one({"date": date_str})
         if existing_schedule:
             logger.debug(f"{date_str}的日程已存在:")
             schedule_text = existing_schedule["schedule"]
@@ -73,7 +63,7 @@ class ScheduleGenerator:
 
             try:
                 schedule_text, _ = await self.llm_scheduler.generate_response(prompt)
-                self.db.db.schedule.insert_one({"date": date_str, "schedule": schedule_text})
+                self.db.schedule.insert_one({"date": date_str, "schedule": schedule_text})
             except Exception as e:
                 logger.error(f"生成日程失败: {str(e)}")
                 schedule_text = "生成日程时出错了"
@@ -153,7 +143,7 @@ class ScheduleGenerator:
         """打印完整的日程安排"""
         if not self._parse_schedule(self.today_schedule_text):
             logger.warning("今日日程有误，将在下次运行时重新生成")
-            self.db.db.schedule.delete_one({"date": datetime.datetime.now().strftime("%Y-%m-%d")})
+            self.db.schedule.delete_one({"date": datetime.datetime.now().strftime("%Y-%m-%d")})
         else:
             logger.info("=== 今日日程安排 ===")
             for time_str, activity in self.today_schedule.items():
diff --git a/src/plugins/utils/statistic.py b/src/plugins/utils/statistic.py
index 2974389e6..4629f0e0b 100644
--- a/src/plugins/utils/statistic.py
+++ b/src/plugins/utils/statistic.py
@@ -53,7 +53,7 @@ class LLMStatistics:
             "costs_by_model": defaultdict(float)
         }
         
-        cursor = self.db.db.llm_usage.find({
+        cursor = self.db.llm_usage.find({
             "timestamp": {"$gte": start_time}
         })