diff --git a/pytyut/BuildingApi.py b/pytyut/BuildingApi.py
index 364cccc..9b71963 100644
--- a/pytyut/BuildingApi.py
+++ b/pytyut/BuildingApi.py
@@ -34,7 +34,7 @@ def get_teach_building_by_campus_id(self, xqh):
         req_url = self.node + 'Tschedule/Zhcx/GetJxlhByXqh'
         res = self.session.post(req_url, data=data, headers=DEFAULT_HEADERS)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
 
     def get_free_class_info(self, zc: str = '', xq: str = '', ksjc: str = '', jsjc: str = '', xqh: str = '',
@@ -53,7 +53,7 @@ def get_free_class_info(self, zc: str = '', xq: str = '', ksjc: str = '', jsjc:
         req_url = self.node + 'Tschedule/Zhcx/GetPageListJson'
         res = self.session.post(req_url, data=data, headers=DEFAULT_HEADERS)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
 
     def get_classroom_tree_by_campus(self):
@@ -64,7 +64,7 @@ def get_classroom_tree_by_campus(self):
         req_url = self.node + 'Tschedule/Zhcx/GetXqJxlJasTreeJson'
         res = self.session.post(req_url, data=GET_CLASSROOM_TREE_BY_CAMPUS_REQUEST_DATA, headers=DEFAULT_HEADERS)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
     
     
@@ -83,5 +83,5 @@ def get_course_schedule_by_classroom(self, semester: str= "now", xqh: str= "01",
         req_url = self.node + 'Tschedule/Zhcx/GetSjjsSjddByJash'
         res = self.session.post(req_url, data=data, headers=DEFAULT_HEADERS)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
diff --git a/pytyut/ClassApi.py b/pytyut/ClassApi.py
index 46ac706..daaf791 100644
--- a/pytyut/ClassApi.py
+++ b/pytyut/ClassApi.py
@@ -29,5 +29,5 @@ def get_major_class_tree(self, semester):
         req_url = self.node + 'Tschedule/Zhcx/GetNjxszyTreeByrwbjJson'
         res = self.session.post(req_url, data=data, headers=DEFAULT_HEADERS)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
diff --git a/pytyut/Connection.py b/pytyut/Connection.py
index cdd6031..93d1765 100644
--- a/pytyut/Connection.py
+++ b/pytyut/Connection.py
@@ -70,7 +70,7 @@ def get_user_info(self):
         req_url = self.node + 'Home/StudentResult'
         res = self.session.get(req_url, headers=self.default_headers)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         avatar = self.session.get(self.node + 'Tresources/AXsgj/ZpResultXs', headers=self.default_headers).content
         param = '<div class="profile-info-name">([^^]*?)</div>[^^]*?<[^^]*?>(.*)</[^^]*?>'
         result = re.findall(param, res.text)
@@ -92,7 +92,7 @@ def get_total_grades_result(self):
         # 这里请求数据与获取课程成绩用的数据是一样的
         res = self.session.post(req_url, data=GET_COURSE_SCORE_REQUEST_DATA, headers=self.default_headers)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         if '评教未完成' in res.text:
             raise CourseException("评教未完成，系统限制不予允许查询成绩！")
         key_info_list = re.findall('<div class="profile-info-name">([^<]*?)</div>', res.text)
diff --git a/pytyut/CourseApi.py b/pytyut/CourseApi.py
index 64432ee..565b86d 100644
--- a/pytyut/CourseApi.py
+++ b/pytyut/CourseApi.py
@@ -39,7 +39,7 @@ def get_course_schedule(self) -> dict:
         """
         res = self.session.post(self.node + 'Tresources/A1Xskb/GetXsKb', headers=DEFAULT_HEADERS)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
 
     def get_all_course_score(self, moreInformation=False) -> list:
@@ -52,7 +52,7 @@ def get_all_course_score(self, moreInformation=False) -> list:
             req_url = self.node + '/Home/GetBxqcj'
             res = self.session.post(req_url, headers=DEFAULT_HEADERS)
             if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-                raise LoginException().login_timeout()
+                raise LoginException.login_timeout()
             html_text = json.loads(res.text)["rpath"]["m_StringValue"]
             # html_text = html_text.replace('<font style="color: #ff0000">', '').replace('</font>', '')
             param = '''<tr><td  height='20%' width='80%' style=\\"vertical-align:middle; \\">([^<]*?)</td><td  height='20%'  width='20%' style=\\"vertical-align:middle; \\">([^<]*?)</td> </tr>'''
@@ -63,7 +63,7 @@ def get_all_course_score(self, moreInformation=False) -> list:
         res = self.session.post(req_url, headers=DEFAULT_HEADERS, data=GET_COURSE_SCORE_REQUEST_DATA)
 
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
 
         if '评教未完成' in res.text:
             raise CourseException("评教未完成，系统限制不予允许查询成绩！")
@@ -116,7 +116,7 @@ def get_test_info(self, semester: str = "now", moreInformation=False) -> list:
             }
             res = self.session.post(req_url, headers=DEFAULT_HEADERS, data=data)
             if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-                raise LoginException().login_timeout()
+                raise LoginException.login_timeout()
             html_text = json.loads(res.text)["rpath"]["m_StringValue"]
             html_text = html_text.replace('<font style="color: #ff0000">', '').replace('</font>', '')
             param = '''<tr><td height='20%' width='10%' style="vertical-align:middle; ">([^<]*?)</td><td height='20%' width='25%' style="vertical-align:middle; ">([^<]*?)</td><td height='20%' width='37%' style="vertical-align:middle; ">([^<]*?)</td> <td height='20%' width='30%' style="vertical-align:middle; ">([^<]*?)</td></tr>'''
@@ -127,7 +127,7 @@ def get_test_info(self, semester: str = "now", moreInformation=False) -> list:
         data = build_get_test_info_request_data(semester)
         res = self.session.post(req_url, headers=DEFAULT_HEADERS, data=data)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
 
     def get_course_schedule_by_bjh(self, semester: str, bjh: str) -> dict:
@@ -145,7 +145,7 @@ def get_course_schedule_by_bjh(self, semester: str, bjh: str) -> dict:
         req_url = self.node + 'Tschedule/Zhcx/GetSjjsSjddByBjh'
         res = self.session.post(req_url, data=data, headers=DEFAULT_HEADERS)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
 
     def get_selectable_course_list(self, semester: str = 'now') -> dict:
@@ -165,7 +165,7 @@ def get_selectable_course_list(self, semester: str = 'now') -> dict:
         res = self.session.post(req_url, data=data, headers=DEFAULT_HEADERS)
 
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
 
     def get_select_course_list(self, pid: str, semester: str = 'now') -> dict:
@@ -185,7 +185,7 @@ def get_select_course_list(self, pid: str, semester: str = 'now') -> dict:
         req_url = self.node + 'Tschedule/C4Xkgl/GetXkkcListByXh'
         res = self.session.post(req_url, data=data, headers=DEFAULT_HEADERS)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         json_info = res.json()
 
         # 判断有没有用错接口
@@ -206,7 +206,7 @@ def get_selected_course_list(self) -> dict:
         data = build_get_selected_course_list_request_data()
         res = self.session.post(req_url, data=data, headers=DEFAULT_HEADERS)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
 
     def get_set_cookie(self, headers: dict) -> str:
@@ -247,7 +247,7 @@ def select_course(self, json_info) -> dict:
         data['__RequestVerificationToken'] = self.get_set_cookie(headers)
         res = self.session.post(req_url, data=data, headers=headers)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
 
     # TODO: 未经测试
@@ -278,7 +278,7 @@ def remove_course(self, json_info, course_Id):
         data['__RequestVerificationToken'] = self.get_set_cookie(headers)
         res = self.session.post(req_url, data=data, headers=headers)
         if '出错' in res.text or '教学管理服务平台(S)' in res.text:
-            raise LoginException().login_timeout()
+            raise LoginException.login_timeout()
         return res.json()
 
     def get_course_schedule_by_classroom(self, xnxq, xqh, jxlh, jash):
diff --git a/pytyut/excepiton/LoginException.py b/pytyut/excepiton/LoginException.py
index 04e5f5a..5a19715 100644
--- a/pytyut/excepiton/LoginException.py
+++ b/pytyut/excepiton/LoginException.py
@@ -12,8 +12,6 @@ class LoginException(Exception):
     def __init__(self, msg: str = "未知异常"):
         self.msg = msg
 
-    def get_msg(self):
-        return self.msg
-
-    def login_timeout(self):
-        self.msg = "登录已失效"
+    @staticmethod
+    def login_timeout() -> "LoginException":
+        return LoginException("登录已失效")