diff --git a/apps/assets/models/base.py b/apps/assets/models/base.py
index 895e0134d..5d0f3cef1 100644
--- a/apps/assets/models/base.py
+++ b/apps/assets/models/base.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 #
+import io
 import os
 import uuid
 from hashlib import md5
@@ -76,6 +77,14 @@ class AssetUser(OrgModelMixin):
         i = '-'.join(str(self.id).split('-')[:3])
         return i
 
+    def get_private_key(self):
+        if not self.private_key_obj:
+            return None
+        string_io = io.StringIO()
+        self.private_key_obj.write_private_key(string_io)
+        private_key = string_io.getvalue()
+        return private_key
+
     def get_related_assets(self):
         assets = self.assets.all()
         return assets
diff --git a/apps/assets/serializers/system_user.py b/apps/assets/serializers/system_user.py
index 5295d74b2..e16a7a271 100644
--- a/apps/assets/serializers/system_user.py
+++ b/apps/assets/serializers/system_user.py
@@ -123,6 +123,7 @@ class SystemUserAuthSerializer(AuthSerializer):
     """
     系统用户认证信息
     """
+    private_key = serializers.SerializerMethodField()
 
     class Meta:
         model = SystemUser
@@ -131,6 +132,10 @@ class SystemUserAuthSerializer(AuthSerializer):
             "login_mode", "password", "private_key",
         ]
 
+    @staticmethod
+    def get_private_key(obj):
+        return obj.get_private_key()
+
 
 class SystemUserSimpleSerializer(serializers.ModelSerializer):
     """