diff --git a/backend/SystemUpdater/UpdateManager.py b/backend/SystemUpdater/UpdateManager.py
index ad55e0e..b3457a6 100644
--- a/backend/SystemUpdater/UpdateManager.py
+++ b/backend/SystemUpdater/UpdateManager.py
@@ -275,8 +275,6 @@ class UpdateManager():
                 upgrade_list = self.update_list.local_upgrade_data.upgrade_groups + self.update_list.local_upgrade_data.single_pkgs
             #发送更新升级列表完成的标志
             self.dbusController.DistUpdateDetectFinished(_success,upgrade_list,header,desc)
-        #检查安装完成之后需要重启吗
-        self.is_reboot_required()
         #清空cache
         if self.cache != None and self.cache.get_changes():
             self.cache.clear()
@@ -435,16 +433,6 @@ class UpdateManager():
 
         return _success,header,desc
 
-    def is_reboot_required(self):
-        """If a reboot is required to get all changes into effect."""
-        return os.path.exists(os.path.join(apt_pkg.config.find_dir("Dir"),
-                                        "var/run/reboot-required"))
-
-    def is_logout_required(self):
-        """If a reboot is required to get all changes into effect."""
-        return os.path.exists(os.path.join(apt_pkg.config.find_dir("Dir"),
-                                        "var/run/logout-required"))
-
     def _check_cache_broken(self,cache):
         with cache.actiongroup():
             if cache.get_changes():
diff --git a/backend/SystemUpdater/UpdateManagerDbus.py b/backend/SystemUpdater/UpdateManagerDbus.py
index 6be8224..125240c 100755
--- a/backend/SystemUpdater/UpdateManagerDbus.py
+++ b/backend/SystemUpdater/UpdateManagerDbus.py
@@ -558,3 +558,8 @@ class UpdateManagerDbusController(dbus.service.Object):
     @dbus.service.signal(UPDATER_DBUS_INTERFACE, signature='sa{sv}')
     def KumSnapSignal(self, type_msg, msg):
         logging.info(COLORLOG_PREFIX + "Emitting" + COLORLOG_SUFFIX +" KumSnapSignal type_msg = %s,msg = %s",type_msg,str(msg))  
+
+    #重启和注销请求信号
+    @dbus.service.signal(UPDATER_DBUS_INTERFACE,signature='s')
+    def RebootLogoutRequired(self,required_status=''):
+        logging.info(COLORLOG_PREFIX + "Emitting"+ COLORLOG_SUFFIX + " RebootLogoutRequired required_status = %s",required_status)
\ No newline at end of file
diff --git a/backend/SystemUpdater/backend/__init__.py b/backend/SystemUpdater/backend/__init__.py
index e9b07b0..3649be6 100644
--- a/backend/SystemUpdater/backend/__init__.py
+++ b/backend/SystemUpdater/backend/__init__.py
@@ -8,6 +8,7 @@ import os
 from gettext import gettext as _
 
 import apt
+import apt_pkg
 from SystemUpdater.Core.utils import (
     unLockedEnableShutdown,
     check_free_space,
@@ -437,6 +438,12 @@ class InstallBackend():
                     self.cache.clear()
 
                 self.window_main.dbusController.UpdateInstallFinished(success,upgrade_content,error_string,error_desc)
+                
+                #更新完成之后检查是否需要重启
+                if self.is_reboot_required() == True:
+                    self.window_main.dbusController.RebootLogoutRequired("reboot")
+                elif self.is_logout_required() == True:
+                    self.window_main.dbusController.RebootLogoutRequired("logout")
 
         elif action == self.ACTION_UPDATE:
             if success == False and 'The following signatures' in self.trans_error_details:
@@ -541,6 +548,17 @@ class InstallBackend():
         except Exception as e:
             logging.error(str(e))
 
+
+    def is_reboot_required(self):
+        """If a reboot is required to get all changes into effect."""
+        return os.path.exists(os.path.join(apt_pkg.config.find_dir("Dir"),
+                                        "var/run/reboot-required"))
+
+    def is_logout_required(self):
+        """If a logout is required to get all changes into effect."""
+        return os.path.exists(os.path.join(apt_pkg.config.find_dir("Dir"),
+                                        "var/run/logout-required"))
+
 # try aptdaemon
 if os.path.exists("/usr/sbin/aptd") \
    and "UPDATE_MANAGER_FORCE_BACKEND_SYNAPTIC" not in os.environ:
diff --git a/backend/interface.md b/backend/interface.md
index eb9de98..1c0b3a4 100755
--- a/backend/interface.md
+++ b/backend/interface.md
@@ -200,7 +200,7 @@
 | FixBrokenStatusChanged | iiisss | 修复依赖的状态信号 |
 | PurgePackagesFinished | iss | 卸载完成信号 |
 | PurgePkgStatusChanged | bss | 卸载进度信息以及状态信息 |
-|  | | |
+| RebootLogoutRequired | s | 请求重启或者注销的信号 |
 |  | | |
 
 
@@ -373,7 +373,24 @@
   InstalldebFinished success = False , error_string = 下载软件包文件失败 , error_desc = 检查您的网络连接。
   ```
 
-  
+
+
+
+#### RebootLogoutRequired
+
+- `介绍：`请求重启和注销的信号
+
+- `出参`:   `s:` "reboot" 表示重启 "logout"表示注销
+
+- `示例：`
+
+  ```sh
+  Emitting RebootLogoutRequired required_status = reboot
+  ```
+
+
+
+