diff --git a/unattended-upgrades/kylin-unattended-upgrade b/unattended-upgrades/kylin-unattended-upgrade
index 4034efd..e7b3fae 100644
--- a/unattended-upgrades/kylin-unattended-upgrade
+++ b/unattended-upgrades/kylin-unattended-upgrade
@@ -325,7 +325,46 @@ logged_msgs = set()  # type: AbstractSet[str]
 
 NEVER_PIN = -32768
 
+class InhibitShutdownLock():
+    
+    def __init__(self):
+        self.inhibit_lock = None
 
+    #安装时禁止关机 进行加锁
+    def lock(self, caller='Kylin System Updater'):
+        """
+        Send a dbus signal to logind to not suspend the system, it will be
+        released when the return value drops out of scope
+        """
+        try:
+            from gi.repository import Gio, GLib
+            connection = Gio.bus_get_sync(Gio.BusType.SYSTEM)
+            
+            var, fdlist = connection.call_with_unix_fd_list_sync(
+                'org.freedesktop.login1', '/org/freedesktop/login1',
+                'org.freedesktop.login1.Manager', 'Inhibit',
+                GLib.Variant('(ssss)',
+                            ('shutdown',
+                            caller, 'Installing Packages',
+                            'block')),
+                None, 0, -1, None, None)
+            self.inhibit_lock = Gio.UnixInputStream(fd=fdlist.steal_fds()[var[0]])
+            logging.info("Shutdown Has been locked...")
+        except Exception as e:
+            logging.error(e)
+
+    #解锁禁止关机 
+    def unlock(self):
+        try:
+            if self.inhibit_lock != None:
+                self.inhibit_lock.close()
+                self.inhibit_lock == None
+                logging.info("Shutdown Has been unlocked...")
+            else:
+                logging.info("Not locked and Quitting ...")
+        except Exception as e:
+            logging.error("unlock failed." + str(e))
+            
 class LoggingDateTime:
     """The date/time representation for the dpkg log file timestamps"""
     LOG_DATE_TIME_FMT = "%Y-%m-%d  %H:%M:%S"
@@ -3101,12 +3140,13 @@ def run(options,             # type: Options
             with open(PROGRESS_LOG,'w+') as f:
                 f.write('0')
             subprocess.Popen('dbus-send --system --type=signal / com.kylin.install.notification.InstallStart',shell=True)
-            if LockedPreventShutdown():
-                pass
-            else:
-                logging.error("cannot get shutdown lock,exiting...")
-                WriteValueToFile(UNATTENDED_UPGRADE_CONFIG_FILE_PATH,"UNATTENDED_UPGRADE","autoupdate_run_status","idle")
-                sys.exit(1)
+            inhibitshutdownlock.lock()
+            # if LockedPreventShutdown():
+            #     pass
+            # else:
+            #     logging.error("cannot get shutdown lock,exiting...")
+            #     WriteValueToFile(UNATTENDED_UPGRADE_CONFIG_FILE_PATH,"UNATTENDED_UPGRADE","autoupdate_run_status","idle")
+            #     sys.exit(1)
 
             logging.debug("InstCount=%i DelCount=%i BrokenCount=%i"
                       % (cache._depcache.inst_count,
@@ -3118,7 +3158,8 @@ def run(options,             # type: Options
                                              options,
                                              logfile_dpkg)
             
-            unLockedEnableShutdown()
+            # unLockedEnableShutdown()
+            inhibitshutdownlock.unlock()
             subprocess.Popen('dbus-send --system --type=signal / com.kylin.install.notification.InstallFinish',shell=True)
             if pkg_install_success:               
                 clean_downloaded_packages(fetcher)
@@ -3651,6 +3692,7 @@ if __name__ == "__main__":
     kylin_system_updater.ConnectToSignals()
     kylin_system_updater.UpdateDetect()
     kylin_system_updater.RunMainloop()
+    inhibitshutdownlock = InhibitShutdownLock()
     if options.download_only:     
         WriteValueToFile(UNATTENDED_UPGRADE_CONFIG_FILE_PATH,"UNATTENDED_UPGRADE","autoupdate_run_status","download")
     elif options.install_only: