diff --git a/backup-daemon/mybackupmanager.cpp b/backup-daemon/mybackupmanager.cpp
index d3c1389..ce9b6b9 100755
--- a/backup-daemon/mybackupmanager.cpp
+++ b/backup-daemon/mybackupmanager.cpp
@@ -4,6 +4,12 @@
 
 #include <QTimer>
 #include <QDateTime>
+#include <QDBusArgument>
+#include <QDBusMessage>
+#include <QDBusPendingReply>
+#include <QDBusMessage>
+#include <QDBusUnixFileDescriptor>
+#include <QDBusConnection>
 #include <mutex>
 #include <sys/reboot.h>
 #include <kysec/status.h>
@@ -449,6 +455,11 @@ bool MyBackupManager::lock(int frontUid)
         return false;
     }
 
+    // 用于替换上面的文件锁的，对应需求8688
+//    if (!inhibit())
+//        return false;
+    inhibit();
+
     m_fdLockFile = lock_file_fd;
     m_backupState = BackupState::PREPARING;
     m_isActive = true;
@@ -458,6 +469,63 @@ bool MyBackupManager::lock(int frontUid)
     return true;
 }
 
+/**
+ * @brief 阻止session关机用dbus新接口Inhibit来替换锁文件的方式
+ * Inhibti函数有四个参数，按顺序分别为：
+        what:需要阻止的是哪些过程，如关机、重启；可以输入的值有：”shutdown”(会同时阻止关机重启)，”sleep”（会同时阻止睡眠休眠），需要同时阻止关机和睡眠可以输入 ”shutdown:sleep”
+        who:是谁要阻止，调用该接口的程序名，如”ukui-sessions”
+        why：阻止的原因，简单描述即可，如”package installing”
+        mode:阻止的方式；可输入的值有”block”(无限期阻止，等到主动取消阻止才会取消)，”delay”（超时阻止，超时一段时间后不管阻止锁，直接执行）
+        建议使用”block”的方式阻止，加锁后记得解锁
+        可以使用同服务下ListInhibitors方法获取当前的inhibit锁，测试验证是否成功注册
+ * @return
+ */
+bool MyBackupManager::inhibit()
+{
+    QDBusMessage message;
+    message = QDBusMessage::createMethodCall("org.freedesktop.login1",
+                                             "/org/freedesktop/login1",
+                                             "org.freedesktop.login1.Manager",
+                                             QStringLiteral("Inhibit"));
+    QString why("The backup and restore tool is busy, please wait.");
+    // 区分中英文
+    QString locale = QLocale::system().name();
+    if (locale == "zh_CN") {
+        why = QString("备份还原工具正在忙碌，请稍等");
+    } else if (locale == "bo_CN") {
+        why = QString("གྲབས་ཉར་སོར་ཆུད་ལག་ཆ་བྲེལ་བཞིན་ཡོད་།ཏོག་ཙམ་སྒུག་རོགས་།");
+    }
+
+    // QVariantList({what, who, why, mode})
+    QVariantList args;
+    args << QString("shutdown:sleep");
+    args << QString("backup-daemon");
+    args << why;
+    args << QString("block");
+    message.setArguments(args);
+
+    QDBusPendingReply<QDBusUnixFileDescriptor> reply = QDBusConnection::systemBus().call(message);
+
+    if (!reply.isValid()) {
+        qDebug() << "inhibit faile!";
+        return false;
+    }
+    QDBusUnixFileDescriptor inhibitFileDescriptor = reply.value();
+    inhibitFileDescriptor.swap(m_inhibitFileDescriptor);
+    qDebug() << "inhibit success!";
+    return true;
+}
+
+void MyBackupManager::uninhibit()
+{
+    if (!m_inhibitFileDescriptor.isValid()) {
+        return;
+    }
+
+    qDebug() << "uninhibit success!";
+    m_inhibitFileDescriptor = QDBusUnixFileDescriptor();
+}
+
 /**
  * @brief 解锁应用
  * @return bool
@@ -469,6 +537,7 @@ bool MyBackupManager::unlock()
     setKysecStatus(true);
 
     Utils::unLockProgram(m_fdLockFile);
+    uninhibit();
 
     m_fdLockFile = -1;
     m_backupState = BackupState::BACKUP_STATE_INIT;
diff --git a/backup-daemon/mybackupmanager.h b/backup-daemon/mybackupmanager.h
index 6491877..d2fb3ae 100755
--- a/backup-daemon/mybackupmanager.h
+++ b/backup-daemon/mybackupmanager.h
@@ -4,6 +4,7 @@
 #include <QObject>
 #include <QtDBus/QDBusVariant>
 #include <QHash>
+#include <QDBusUnixFileDescriptor>
 #include "mythread.h"
 #include "../common/mydefine.h"
 #include "../common/spinlock_mutex.h"
@@ -74,8 +75,10 @@ private slots:
 private:
     // 锁定
     bool lock(int frontUid);
+    bool inhibit();
     // 解锁
     bool unlock();
+    void uninhibit();
     // 自旋锁
     spinlock_mutex m_mutex;
 
@@ -85,6 +88,7 @@ private:
 private:
     // 锁文件描述符
     int m_fdLockFile = -1;
+    QDBusUnixFileDescriptor m_inhibitFileDescriptor;
     // 备份还原状态
     BackupState m_backupState = BackupState::BACKUP_STATE_INIT;
     // 是否活动的，兼容以前用的,和m_backupState的实际使用功能有重复