diff --git a/oneforall/common/crawl.py b/oneforall/common/crawl.py
index 5bcea71..eda098c 100644
--- a/oneforall/common/crawl.py
+++ b/oneforall/common/crawl.py
@@ -1,10 +1,9 @@
-# coding=utf-8
 from .module import Module
 
 
 class Crawl(Module):
     """
-
+    爬虫基类
     """
     def __init__(self):
         Module.__init__(self)
diff --git a/oneforall/common/query.py b/oneforall/common/query.py
index 2e179ee..7f4f78c 100644
--- a/oneforall/common/query.py
+++ b/oneforall/common/query.py
@@ -1,4 +1,3 @@
-# coding=utf-8
 from .module import Module
 
 
diff --git a/oneforall/common/resolve.py b/oneforall/common/resolve.py
index 0b88cbd..d33c6e4 100644
--- a/oneforall/common/resolve.py
+++ b/oneforall/common/resolve.py
@@ -1,4 +1,3 @@
-import signal
 import socket
 import asyncio
 import functools
diff --git a/oneforall/common/search.py b/oneforall/common/search.py
index eb19fa9..6802c45 100644
--- a/oneforall/common/search.py
+++ b/oneforall/common/search.py
@@ -1,5 +1,3 @@
-# coding=utf-8
-import requests
 import config
 from .module import Module
 from . import utils