diff --git a/backend/dvadmin/system/fixtures/init_systemconfig.json b/backend/dvadmin/system/fixtures/init_systemconfig.json
index ed4c967..090a588 100644
--- a/backend/dvadmin/system/fixtures/init_systemconfig.json
+++ b/backend/dvadmin/system/fixtures/init_systemconfig.json
@@ -49,6 +49,25 @@
                 "placeholder": "请输入默认密码",
                 "setting": null,
                 "children": []
+            },
+            {
+                "parent": 10,
+                "title": "开启单点登录",
+                "key": "single_login",
+                "value": true,
+                "sort": 1,
+                "status": true,
+                "data_options": null,
+                "form_item_type": 9,
+                "rule": [
+                    {
+                        "message": "必填项不能为空",
+                        "required": true
+                    }
+                ],
+                "placeholder": "请选择",
+                "setting": null,
+                "children": []
             }
         ]
     },
diff --git a/backend/dvadmin/system/views/login.py b/backend/dvadmin/system/views/login.py
index aad0563..124f26b 100644
--- a/backend/dvadmin/system/views/login.py
+++ b/backend/dvadmin/system/views/login.py
@@ -109,14 +109,19 @@ class LoginSerializer(TokenObtainPairSerializer):
         request.user = self.user
         # 记录登录日志
         save_login_log(request=request)
-        # 将之前登录用户的token加入黑名单
-        user = Users.objects.filter(id=self.user.id).values('last_token').first()
-        last_token = user.get('last_token')
-        if last_token:
-            token = RefreshToken(last_token)
-            token.blacklist()
-        # 将最新的token保存到用户表
-        Users.objects.filter(id=self.user.id).update(last_token=data.get('refresh'))
+        # 是否开启单点登录
+        if dispatch.get_system_config_values("base.single_login"):
+            # 将之前登录用户的token加入黑名单
+            user = Users.objects.filter(id=self.user.id).values('last_token').first()
+            last_token = user.get('last_token')
+            if last_token:
+                try:
+                    token = RefreshToken(last_token)
+                    token.blacklist()
+                except:
+                    pass
+            # 将最新的token保存到用户表
+            Users.objects.filter(id=self.user.id).update(last_token=data.get('refresh'))
         return {"code": 2000, "msg": "请求成功", "data": data}
 
 class CustomTokenRefreshView(TokenRefreshView):