diff --git a/apps/jumpserver/conf.py b/apps/jumpserver/conf.py
index a2e96966f..7a807dd5d 100644
--- a/apps/jumpserver/conf.py
+++ b/apps/jumpserver/conf.py
@@ -212,12 +212,12 @@ class Config(dict):
         # Cas 认证
         'AUTH_CAS': False,
         'CAS_SERVER_URL': "https://example.com/cas/",
-        'CAS_ROOT_PROXIED_AS': '',
+        'CAS_ROOT_PROXIED_AS': 'https://example.com',
         'CAS_LOGOUT_COMPLETELY': True,
         'CAS_VERSION': 3,
         'CAS_USERNAME_ATTRIBUTE': 'uid',
         'CAS_APPLY_ATTRIBUTES_TO_USER': False,
-        'CAS_RENAME_ATTRIBUTES': {},
+        'CAS_RENAME_ATTRIBUTES': {'uid': 'username'},
         'CAS_CREATE_USER': True,
 
         'AUTH_SSO': False,
diff --git a/apps/settings/models.py b/apps/settings/models.py
index 44867dc6b..d6dc601ee 100644
--- a/apps/settings/models.py
+++ b/apps/settings/models.py
@@ -117,6 +117,10 @@ class Setting(models.Model):
         # 设置内存值
         setattr(settings, name, setting.cleaned_value)
 
+    @classmethod
+    def refresh_AUTH_CAS(cls):
+        cls.refresh_authentications('AUTH_CAS')
+
     @classmethod
     def refresh_AUTH_LDAP(cls):
         cls.refresh_authentications('AUTH_LDAP')
diff --git a/apps/settings/serializers/auth/cas.py b/apps/settings/serializers/auth/cas.py
index 49a02505f..47cdfc58c 100644
--- a/apps/settings/serializers/auth/cas.py
+++ b/apps/settings/serializers/auth/cas.py
@@ -1,4 +1,4 @@
-
+import json
 from django.utils.translation import ugettext_lazy as _
 from rest_framework import serializers
 
@@ -10,6 +10,7 @@ __all__ = [
 class CASSettingSerializer(serializers.Serializer):
     AUTH_CAS = serializers.BooleanField(required=False, label=_('Enable CAS Auth'))
     CAS_SERVER_URL = serializers.CharField(required=False, max_length=1024, label=_('Server url'))
+    CAS_ROOT_PROXIED_AS = serializers.CharField(required=False, max_length=1024, label=_('Proxy server url'))
     CAS_LOGOUT_COMPLETELY = serializers.BooleanField(required=False, label=_('Logout completely'))
     CAS_VERSION = serializers.IntegerField(required=False, label=_('Version'))
     CAS_USERNAME_ATTRIBUTE = serializers.CharField(required=False, max_length=1024, label=_('Username attr'))