diff --git a/message_driven_loop_test.py b/message_driven_loop_test.py
index d5663e8d6..dcca23d92 100644
--- a/message_driven_loop_test.py
+++ b/message_driven_loop_test.py
@@ -10,7 +10,7 @@
 
 import asyncio
 import time
-from typing import List, Dict, Any
+from typing import List
 
 
 class MockMessage:
@@ -129,7 +129,7 @@ async def test_message_driven_logic():
     )
     
     # 统计结果
-    print(f"\n=== 测试结果 ===")
+    print("\n=== 测试结果 ===")
     print(f"思考循环次数: {chat_loop.thinking_cycles}")
     print(f"状态检查次数: {chat_loop.status_checks}")
     print(f"思考/检查比例: {chat_loop.thinking_cycles}/{chat_loop.status_checks}")
@@ -163,7 +163,7 @@ async def test_no_message_scenario():
         if not has_new_messages:
             await asyncio.sleep(1.0)
     
-    print(f"无消息运行结果:")
+    print("无消息运行结果:")
     print(f"  思考循环: {chat_loop.thinking_cycles} 次")
     print(f"  状态检查: {chat_loop.status_checks} 次")
     
diff --git a/src/chat/memory_system/async_instant_memory_wrapper.py b/src/chat/memory_system/async_instant_memory_wrapper.py
index ec672b186..839c003f2 100644
--- a/src/chat/memory_system/async_instant_memory_wrapper.py
+++ b/src/chat/memory_system/async_instant_memory_wrapper.py
@@ -6,7 +6,7 @@
 
 import asyncio
 import time
-from typing import Optional, List, Dict, Any
+from typing import Optional, Dict, Any
 from src.common.logger import get_logger
 from src.config.config import global_config
 
diff --git a/src/chat/memory_system/async_memory_optimizer.py b/src/chat/memory_system/async_memory_optimizer.py
index 92c796a46..77855ba56 100644
--- a/src/chat/memory_system/async_memory_optimizer.py
+++ b/src/chat/memory_system/async_memory_optimizer.py
@@ -8,8 +8,6 @@ import asyncio
 import time
 from typing import Dict, List, Optional, Any, Callable
 from dataclasses import dataclass
-from queue import Queue
-import threading
 from concurrent.futures import ThreadPoolExecutor
 from src.common.logger import get_logger
 from src.config.config import global_config
diff --git a/src/plugins/built_in/web_search_tool/engines/bing_engine.py b/src/plugins/built_in/web_search_tool/engines/bing_engine.py
index 5ae226404..cbd30a6f9 100644
--- a/src/plugins/built_in/web_search_tool/engines/bing_engine.py
+++ b/src/plugins/built_in/web_search_tool/engines/bing_engine.py
@@ -4,10 +4,8 @@ Bing search engine implementation
 import asyncio
 import functools
 import random
-import os
 import traceback
 from typing import Dict, List, Any
-from datetime import datetime, timedelta
 import requests
 from bs4 import BeautifulSoup
 
diff --git a/src/plugins/built_in/web_search_tool/tools/url_parser.py b/src/plugins/built_in/web_search_tool/tools/url_parser.py
index d5cb41fdb..315e06271 100644
--- a/src/plugins/built_in/web_search_tool/tools/url_parser.py
+++ b/src/plugins/built_in/web_search_tool/tools/url_parser.py
@@ -3,7 +3,7 @@ URL parser tool implementation
 """
 import asyncio
 import functools
-from typing import Any, Dict, List
+from typing import Any, Dict
 from exa_py import Exa
 import httpx
 from bs4 import BeautifulSoup
diff --git a/src/plugins/built_in/web_search_tool/tools/web_search.py b/src/plugins/built_in/web_search_tool/tools/web_search.py
index 56f70d355..c09ad5e92 100644
--- a/src/plugins/built_in/web_search_tool/tools/web_search.py
+++ b/src/plugins/built_in/web_search_tool/tools/web_search.py
@@ -5,7 +5,7 @@ import asyncio
 from typing import Any, Dict, List
 
 from src.common.logger import get_logger
-from src.plugin_system import BaseTool, ToolParamType, llm_api
+from src.plugin_system import BaseTool, ToolParamType
 from src.plugin_system.apis import config_api
 from src.common.cache_manager import tool_cache