diff --git a/apps/common/mixins.py b/apps/common/mixins.py
index b12416623..892b0fae6 100644
--- a/apps/common/mixins.py
+++ b/apps/common/mixins.py
@@ -40,10 +40,9 @@ class NoDeleteModelMixin(models.Model):
 
 
 class JSONResponseMixin(object):
-
     """JSON mixin"""
-
-    def render_json_response(self, context):
+    @staticmethod
+    def render_json_response(context):
         return JsonResponse(context)
 
 
diff --git a/apps/users/api.py b/apps/users/api.py
index bc881d9b4..f122b49cf 100644
--- a/apps/users/api.py
+++ b/apps/users/api.py
@@ -29,6 +29,9 @@ class UserViewSet(BulkModelViewSet):
     serializer_class = serializers.UserSerializer
     permission_classes = (IsSuperUser,)
 
+    def allow_bulk_destroy(self, qs, filtered):
+        return qs is not filtered
+
 
 class UserUpdateGroupApi(generics.RetrieveUpdateAPIView):
     queryset = User.objects.all()
diff --git a/apps/users/models.py b/apps/users/models.py
index 934aaea61..84ec5d6a1 100644
--- a/apps/users/models.py
+++ b/apps/users/models.py
@@ -79,7 +79,7 @@ class User(AbstractUser):
     role = models.CharField(choices=ROLE_CHOICES, default='User', max_length=10, blank=True, verbose_name=_('Role'))
     avatar = models.ImageField(upload_to="avatar", verbose_name=_('Avatar'))
     wechat = models.CharField(max_length=30, blank=True, verbose_name=_('Wechat'))
-    phone = models.CharField(max_length=20, blank=True, verbose_name=_('Phone'))
+    phone = models.CharField(max_length=20, blank=True, null=True, verbose_name=_('Phone'))
     enable_otp = models.BooleanField(default=False, verbose_name=_('Enable OTP'))
     secret_key_otp = models.CharField(max_length=16, blank=True)
     _private_key = models.CharField(max_length=5000, blank=True, verbose_name=_('ssh private key'))
diff --git a/apps/users/templates/users/_user_bulk_update_modal.html b/apps/users/templates/users/_user_bulk_update_modal.html
index 8ebed3065..40ab6efb1 100644
--- a/apps/users/templates/users/_user_bulk_update_modal.html
+++ b/apps/users/templates/users/_user_bulk_update_modal.html
@@ -27,7 +27,7 @@
     </div>
     <div class="form-group">
         <div class="col-sm-9 col-lg-9 col-sm-offset-2">
-            <div class="checkbox checkbox-success">
+            <div class="checkbox">
                 <input type="checkbox" name="enable_otp" checked id="id_enable_otp"><label for="id_enable_otp">{% trans 'Enable-OTP' %}</label>
             </div>
         </div>
diff --git a/apps/users/templates/users/user_list.html b/apps/users/templates/users/user_list.html
index 7cae42497..cf0d4190b 100644
--- a/apps/users/templates/users/user_list.html
+++ b/apps/users/templates/users/user_list.html
@@ -117,11 +117,11 @@ $(document).ready(function(){
                 $('<span />', {class: 'help-block text-danger'}).html(data.msg).insertAfter($('#id_users'));
             } else {
                 $('#id_created').html(data.created_info);
-                $('#id_created_detail').html(data.created.join(','));
+                $('#id_created_detail').html(data.created.join(', '));
                 $('#id_updated').html(data.updated_info);
-                $('#id_updated_detail').html(data.updated.join(','));
+                $('#id_updated_detail').html(data.updated.join(', '));
                 $('#id_failed').html(data.failed_info);
-                $('#id_failed_detail').html(data.failed.join(','));
+                $('#id_failed_detail').html(data.failed.join(', '));
                 var $data_table = $('#user_list_table').DataTable();
                 $data_table.ajax.reload();
             }
diff --git a/apps/users/views.py b/apps/users/views.py
index 595d110aa..022041325 100644
--- a/apps/users/views.py
+++ b/apps/users/views.py
@@ -530,8 +530,9 @@ class BulkImportUserView(AdminUserRequiredMixin, JSONResponseMixin, FormView):
                 groups = None
             try:
                 user = User.objects.create(**user_dict)
+                user_add_success_next(user)
                 created.append(user_dict['username'])
-            except IntegrityError:
+            except IntegrityError as e:
                 user = User.objects.filter(username=user_dict['username'])
                 if not user:
                     failed.append(user_dict['username'])
@@ -539,7 +540,8 @@ class BulkImportUserView(AdminUserRequiredMixin, JSONResponseMixin, FormView):
                 user.update(**user_dict)
                 user = user[0]
                 updated.append(user_dict['username'])
-            except TypeError:
+            except TypeError as e:
+                print(e)
                 failed.append(user_dict['username'])
                 user = None