diff --git a/backend/SystemUpdater/UpdateManager.py b/backend/SystemUpdater/UpdateManager.py
index fd8c538..ec8f9d3 100644
--- a/backend/SystemUpdater/UpdateManager.py
+++ b/backend/SystemUpdater/UpdateManager.py
@@ -1,6 +1,6 @@
 # UpdateManager.py
 # -*- Mode: Python; indent-tabs-mode: nil; tab-width: 4; coding: utf-8 -*-
-import os,apt
+import os
 import apt_pkg
 import sys
 import time
@@ -77,7 +77,7 @@ class UpdateManager():
             self.simulate_mode = SimulateTerminal()
 
             #光盘源
-            self.source_info = UpdateSourceInfo()
+            self.source_info = MakeSourceInit()
             
             self.install_mode = UpdateInstallMode(self)
 
@@ -851,11 +851,37 @@ class UpdateEssentialItem():
                 logging.info("%s will be remove in remove pkg...",pkg)
                 remove_pkgs.remove(pkg)
 
-class UpdateSourceInfo():
+class MakeSourceInit():
     DIR_MRDIA = "/media/"
+    MOUNT_SQUASHFS_PATH = "/media/kylin/kylin-test-upgrade/upgrade-pool/"
     def __init__(self):
         self.is_disc = False
-    
+        self.is_mounted = False
+
+    def mount_squashfs(self,mount_source):
+        args = ["mount", "-o","loop",mount_source,self.MOUNT_SQUASHFS_PATH]
+
+        p = subprocess.run(args, stdout=subprocess.PIPE,stderr=subprocess.STDOUT,text=True)
+        logging.info(str(p.stdout))
+        if p.returncode == 0:
+            self.is_mounted = True
+            return True,' '
+        else:
+            self.is_mounted = False
+            return False,str(p.stdout)
+
+    def check_mount(self):
+        if self.is_mounted == True:
+            args = ["umount",self.MOUNT_SQUASHFS_PATH]
+            logging.info("Will be to umount the offlinesource...")
+            p = subprocess.run(args, stdout=subprocess.PIPE,stderr=subprocess.STDOUT,text=True)
+            logging.info(str(p.stdout))
+            if p.returncode == 0:
+                self.is_mounted = False
+                return True
+            else:
+                return False
+
     #判断是否为光盘源
     #光盘源格式 deb file:///home/someone/packs/
     def check_source(self):
diff --git a/backend/SystemUpdater/UpdateManagerDbus.py b/backend/SystemUpdater/UpdateManagerDbus.py
index 3dff3df..6306c1e 100755
--- a/backend/SystemUpdater/UpdateManagerDbus.py
+++ b/backend/SystemUpdater/UpdateManagerDbus.py
@@ -779,7 +779,18 @@ class UpdateManagerDbusController(dbus.service.Object):
             return str(e),''
         logging.info('Current os_version: %s, release_id: %s .', os_version, update_version)
         return os_version,update_version
-    
+
+    @dbus.service.method(UPDATER_DBUS_INTERFACE, in_signature='s', out_signature='bs')
+    def MountSquashfsSource(self, mount_source):
+        logging.info(COLORMETHOR_PREFIX+'Method'+COLORLOG_SUFFIX+' MountSquashfsSource %s',str(mount_source))
+        try:
+            ret,dsc = self.parent.source_info.mount_squashfs(str(mount_source))
+            logging.info(COLORLOG_PREFIX+"Emitting"+COLORLOG_SUFFIX+" FixBrokenStatusChanged finished = %r dec = %s",ret,dsc)
+            return ret,dsc
+        except Exception as e:
+            logging.error(str(e))
+            return False,str(e)
+
     #更新进度信息 0~100 进度信息 101为非预期的信号
     @dbus.service.signal(UPDATER_DBUS_INTERFACE,signature='is')
     def UpdateDetectStatusChanged(self,progress,status):
diff --git a/backend/SystemUpdater/backend/__init__.py b/backend/SystemUpdater/backend/__init__.py
index ed86474..6d437cf 100644
--- a/backend/SystemUpdater/backend/__init__.py
+++ b/backend/SystemUpdater/backend/__init__.py
@@ -673,6 +673,8 @@ class InstallBackend():
                 self.window_main.dbusController.UpdateInstallFinished(success,self.now_upgrade.upgrade_content,error_string,error_desc)
                 
                 if success:
+                    self.window_main.source_info.check_mount()
+
                     self.window_main.dbusController.CheckRebootRequired("self")
                     #安装完成之后 更新一次cache
                     logging.info("Install or Upgrade successful, so Now update Cache...")
diff --git a/backend/interface.md b/backend/interface.md
index e65d8f8..addf4bc 100755
--- a/backend/interface.md
+++ b/backend/interface.md
@@ -335,6 +335,12 @@
 
 
 
+#### MountSquashfsSource
+
+- `简介：` 挂载离线源squashfs
+- `入参：` `s:` 挂载文件的位置
+- `出参：` `b:` True or False 执行的结果，`s:` 字符类型错误信息描述
+
 
 
 ### Signal列表
diff --git a/debian/control b/debian/control
index 8c11b27..a5825c1 100644
--- a/debian/control
+++ b/debian/control
@@ -37,7 +37,7 @@ Depends: ${python3:Depends},
          python3-psutil,
          python3-gi (>= 3.8),
          python3-yaml,
-         aptdaemon (>=1.1.1+bzr982-0kylin32.3k4.6),
+         aptdaemon (>=1.1.1+bzr982-0kylin32.3k5.2),
 	     python3-distro-info,
          python3-pyqt5,
          python3-crypto,