diff --git a/account/tests.py b/account/tests.py
index aa21bc7..c8279aa 100644
--- a/account/tests.py
+++ b/account/tests.py
@@ -179,37 +179,28 @@ class UserAdminAPITest(APITestCase):
         response = self.client.get(self.url + "?keyword=test1")
         self.assertEqual(response.data["code"], 0)
 
-
-class UserAdminAPITest(APITestCase):
-    def setUp(self):
-        self.client = APIClient()
-        self.url = reverse("user_admin_api")
-        user = User.objects.create(username="test", admin_type=SUPER_ADMIN)
-        user.set_password("testaa")
-        user.save()
-
     def test_put_invalid_data(self):
-        self.client.login(username="test", password="testaa")
+        self.client.login(username="testx", password="testxx")
         data = {"username": "test", "password": "testaa", "email": "60@qq.com", "admin_type": "2"}
         response = self.client.put(self.url, data=data)
         self.assertEqual(response.data["code"], 1)
 
     def test_user_does_not_exist(self):
-        self.client.login(username="test", password="testaa")
+        self.client.login(username="testx", password="testxx")
         data = {"id": 2, "username": "test0", "real_name": "test00",
                 "password": "testaa","email": "60@qq.com", "admin_type": "2"}
         response = self.client.put(self.url, data=data)
         self.assertEqual(response.data, {"code": 1, "data": u"该用户不存在！"})
 
     def test_success_user_edit_not_password(self):
-        self.client.login(username="test", password="testaa")
+        self.client.login(username="testx", password="testxx")
         data = {"id": 1, "username": "test0", "real_name": "test00",
                 "email": "60@qq.com", "admin_type": "2"}
         response = self.client.put(self.url, data=data)
         self.assertEqual(response.data["code"], 0)
 
     def test_success_user_edit_change_password(self):
-        self.client.login(username="test", password="testaa")
+        self.client.login(username="testx", password="testxx")
         data = {"id": 1, "username": "test0", "real_name": "test00", "password": "111111",
                 "email": "60@qq.com", "admin_type": "2"}
         response = self.client.put(self.url, data=data)
diff --git a/oj/local_settings.py b/oj/local_settings.py
index 7a7249c..2112566 100644
--- a/oj/local_settings.py
+++ b/oj/local_settings.py
@@ -16,7 +16,7 @@ DATABASES = {
     }
 }
 
-mongodb_setting = {
+MONGODB = {
     'HOST': '127.0.0.1',
     'USERNAME': 'root',
     'PASSWORD': 'root',
diff --git a/oj/urls.py b/oj/urls.py
index e2fd51c..b0ca69f 100644
--- a/oj/urls.py
+++ b/oj/urls.py
@@ -14,7 +14,7 @@ from group.views import (GroupAdminAPIView, GroupMemberAdminAPIView,
 from admin.views import AdminTemplateView
 
 from problem.views import TestCaseUploadAPIView, ProblemTagAdminAPIView, ProblemAdminAPIView
-from submission.views import SubmissionnAPIView
+from submission.views import SubmissionAPIView
 
 urlpatterns = [
     url(r'^install/$', "install.views.install"),
@@ -56,6 +56,6 @@ urlpatterns = [
 
     url(r'^api/admin/join_group_request/$', JoinGroupRequestAdminAPIView.as_view(),
         name="join_group_request_admin_api"),
-    url(r'^api/submission/$', SubmissionnAPIView.as_view(), name="submission_api"),
+    url(r'^api/submission/$', SubmissionAPIView.as_view(), name="submission_api"),
 
 ]
diff --git a/submission/views.py b/submission/views.py
index 0a923e0..07fe70f 100644
--- a/submission/views.py
+++ b/submission/views.py
@@ -18,12 +18,12 @@ from .serializers import  CreateSubmissionSerializer
 
 
 def _create_mondodb_connection():
-        mongodb_setting = settings["mongodb_setting"]
-        connection = pymongo.MongoClient(host=mongodb_setting["HOST"], port=mongodb_setting["PORT"])
-        return connection["oj"]["oj_submission"]
+    mongodb_setting = settings.MONGODB
+    connection = pymongo.MongoClient(host=mongodb_setting["HOST"], port=mongodb_setting["PORT"])
+    return connection["oj"]["oj_submission"]
 
 
-class SubmissionnAPIView(APIView):
+class SubmissionAPIView(APIView):
     @login_required
     def post(self, request):
         """