diff --git a/apps/settings/api/settings.py b/apps/settings/api/settings.py
index 4dda51408..2047faa08 100644
--- a/apps/settings/api/settings.py
+++ b/apps/settings/api/settings.py
@@ -34,6 +34,7 @@ class SettingsApi(generics.RetrieveUpdateAPIView):
         'sso': serializers.SSOSettingSerializer,
         'clean': serializers.CleaningSerializer,
         'other': serializers.OtherSettingSerializer,
+        'sms': serializers.SMSSettingSerializer,
         'alibaba': serializers.AlibabaSMSSettingSerializer,
         'tencent': serializers.TencentSMSSettingSerializer,
     }
diff --git a/apps/settings/serializers/auth/sms.py b/apps/settings/serializers/auth/sms.py
index 275a8436e..c018720b2 100644
--- a/apps/settings/serializers/auth/sms.py
+++ b/apps/settings/serializers/auth/sms.py
@@ -3,21 +3,24 @@ from rest_framework import serializers
 
 from common.message.backends.sms import BACKENDS
 
-__all__ = ['AlibabaSMSSettingSerializer', 'TencentSMSSettingSerializer']
+__all__ = ['SMSSettingSerializer', 'AlibabaSMSSettingSerializer', 'TencentSMSSettingSerializer']
+
+
+class SMSSettingSerializer(serializers.Serializer):
+    SMS_ENABLED = serializers.BooleanField(default=False, label=_('Enable SMS'))
+    SMS_BACKEND = serializers.ChoiceField(choices=BACKENDS.choices, default=BACKENDS.ALIBABA)
 
 
 class BaseSMSSettingSerializer(serializers.Serializer):
-    SMS_ENABLED = serializers.BooleanField(default=False, label=_('Enable SMS'))
     SMS_TEST_PHONE = serializers.CharField(max_length=256, required=False, label=_('Test phone'))
 
     def to_representation(self, instance):
         data = super().to_representation(instance)
-        data['SMS_BACKEND'] = self.fields['SMS_BACKEND'].default
+        # data['SMS_BACKEND'] = self.fields['SMS_BACKEND'].default
         return data
 
 
 class AlibabaSMSSettingSerializer(BaseSMSSettingSerializer):
-    SMS_BACKEND = serializers.ChoiceField(choices=BACKENDS.choices, default=BACKENDS.ALIBABA)
     ALIBABA_ACCESS_KEY_ID = serializers.CharField(max_length=256, required=True, label='AccessKeyId')
     ALIBABA_ACCESS_KEY_SECRET = serializers.CharField(
         max_length=256, required=False, label='AccessKeySecret', write_only=True)
@@ -35,7 +38,6 @@ class AlibabaSMSSettingSerializer(BaseSMSSettingSerializer):
 
 
 class TencentSMSSettingSerializer(BaseSMSSettingSerializer):
-    SMS_BACKEND = serializers.ChoiceField(choices=BACKENDS.choices, default=BACKENDS.TENCENT)
     TENCENT_SECRET_ID = serializers.CharField(max_length=256, required=True, label='Secret id')
     TENCENT_SECRET_KEY = serializers.CharField(max_length=256, required=False, label='Secret key', write_only=True)
     TENCENT_SDKAPPID = serializers.CharField(max_length=256, required=True, label='SDK app id')