diff --git a/apps/assets/models/user.py b/apps/assets/models/user.py
index bb672fff3..7085a3b2b 100644
--- a/apps/assets/models/user.py
+++ b/apps/assets/models/user.py
@@ -158,11 +158,10 @@ class SystemUser(BaseUser):
     def can_perm_to_asset(self):
         return self.protocol not in [self.PROTOCOL_MYSQL]
 
-    def load_asset_special_auth(self, asset=None, username=None):
-        instance = super().load_asset_special_auth(asset=asset, username=username)
+    def _merge_auth(self, other):
+        super()._merge_auth(other)
         if self.username_same_with_user:
-            instance.username = username
-        return instance
+            self.username = other.username
 
     @property
     def cmd_filter_rules(self):
diff --git a/apps/assets/serializers/system_user.py b/apps/assets/serializers/system_user.py
index a7e413018..6a9a31b9f 100644
--- a/apps/assets/serializers/system_user.py
+++ b/apps/assets/serializers/system_user.py
@@ -1,5 +1,4 @@
 from rest_framework import serializers
-
 from django.utils.translation import ugettext_lazy as _
 from django.db.models import Count
 
@@ -164,6 +163,14 @@ class SystemUserListSerializer(SystemUserSerializer):
 
 class SystemUserWithAuthInfoSerializer(SystemUserSerializer):
     class Meta(SystemUserSerializer.Meta):
+        fields = [
+            'id', 'name', 'username', 'protocol',
+            'password', 'public_key', 'private_key',
+            'login_mode', 'login_mode_display',
+            'priority', 'username_same_with_user',
+            'auto_push', 'sudo', 'shell', 'comment',
+            'auto_generate_key', 'sftp_root',
+        ]
         extra_kwargs = {
             'nodes_amount': {'label': _('Node')},
             'assets_amount': {'label': _('Asset')},