diff --git a/lib/crawler.py b/lib/crawler.py
index d344fba..7d7cb5c 100644
--- a/lib/crawler.py
+++ b/lib/crawler.py
@@ -13,7 +13,6 @@ class Crawler(object):
         self.__password = password
         self.__phone = phone
         self.__session = None
-        self.__ip = None
         self.__student_id = None
         self.__student_name = None
         self.__grade_data = ''
@@ -59,7 +58,6 @@ class Crawler(object):
                     raise('账号或密码错误')
             except:
                 return ('账号或者密码错误', 510)
-            self.__ip = ['jwgls0', 'cust', 'edu', 'cn']
             r = self.__session.get(url='https://mysso.cust.edu.cn/cas/login?service=https://jwgls1.cust.edu.cn/welcome', allow_redirects=False)
             ticket = r.headers['Location'][42:]
             asp_net_sessionid_param = {'Ticket': ticket, 'Url': 'https://jwgls1.cust.edu.cn/welcome'}
@@ -332,5 +330,5 @@ class Crawler(object):
                 'grade': self.__grade_data,
                 'schedule': self.__schedule_data
             },
-            200   
+            200
         )