diff --git a/services/backup_sa/include/module_ipc/svc_session_manager.h b/services/backup_sa/include/module_ipc/svc_session_manager.h
index 5b84215f351c2fa934344eaf6345da8393931891..ab33536585fc3e14156e7b07a1e03202ac5b5321 100644
--- a/services/backup_sa/include/module_ipc/svc_session_manager.h
+++ b/services/backup_sa/include/module_ipc/svc_session_manager.h
@@ -31,8 +31,8 @@
 
 #include "b_file_info.h"
 #include "b_resources/b_constants.h"
-#include "i_service_reverse.h"
 #include "i_service.h"
+#include "i_service_reverse.h"
 #include "module_ipc/svc_backup_connection.h"
 #include "svc_death_recipient.h"
 #include "timer.h"
@@ -225,11 +225,18 @@ public:
      */
     bool GetSchedBundleName(std::string &bundleName);
 
+    /**
+     * @brief Set the Backup Ext Name object
+     *
+     * @param bundleName 应用名称
+     * @param backupExtName extension name
+     */
+    void SetBackupExtName(const std::string &bundleName, const std::string &backupExtName);
+
     /**
      * @brief 获取backup extension name
      *
      * @param bundleName 应用名称
-     * @return std::string
      * @return std::string extension name
      */
     std::string GetBackupExtName(const std::string &bundleName);
@@ -312,7 +319,7 @@ public:
      */
     bool NeedToUnloadService();
 
-/**
+    /**
      * @brief Set the bundle restore type object
      *
      * @param bundleName
@@ -374,7 +381,7 @@ public:
      * @param bundleName 应用名称
      * @return
      */
-    void BundleExtTimerStart(const std::string &bundleName, const Utils::Timer::TimerCallback& callback);
+    void BundleExtTimerStart(const std::string &bundleName, const Utils::Timer::TimerCallback &callback);
 
     /**
      * @brief 取消/暂停应用扩展能力定时器
diff --git a/services/backup_sa/src/module_ipc/service.cpp b/services/backup_sa/src/module_ipc/service.cpp
index 116dd770756c445c364327b521da047212fb73e4..8f85c320c0524e1303b5d06aa34ea73102aa5ddc 100644
--- a/services/backup_sa/src/module_ipc/service.cpp
+++ b/services/backup_sa/src/module_ipc/service.cpp
@@ -259,6 +259,7 @@ ErrCode Service::AppendBundlesRestoreSession(UniqueFd fd,
             session_->SetBundleVersionCode(bundleInfo.name, bundleInfo.versionCode);
             session_->SetBundleVersionName(bundleInfo.name, bundleInfo.versionName);
             session_->SetBundleDataSize(bundleInfo.name, bundleInfo.spaceOccupied);
+            session_->SetBackupExtName(bundleInfo.name, bundleInfo.extensionName);
         }
     }
     for (auto info : restoreInfos) {
@@ -268,8 +269,6 @@ ErrCode Service::AppendBundlesRestoreSession(UniqueFd fd,
             session_->RemoveExtInfo(info.name);
         }
     }
-    Start();
-    Finish();
     OnStartSched();
     return BError(BError::Codes::OK);
 }
@@ -282,13 +281,12 @@ ErrCode Service::AppendBundlesBackupSession(const vector<BundleName> &bundleName
     session_->AppendBundles(bundleNames);
     for (auto info : backupInfos) {
         session_->SetBundleDataSize(info.name, info.spaceOccupied);
+        session_->SetBackupExtName(info.name, info.extensionName);
         if (info.allToBackup == false) {
             session_->GetServiceReverseProxy()->BackupOnBundleStarted(BError(BError::Codes::SA_REFUSED_ACT), info.name);
             session_->RemoveExtInfo(info.name);
         }
     }
-    Start();
-    Finish();
     OnStartSched();
     return BError(BError::Codes::OK);
 }
@@ -434,6 +432,7 @@ ErrCode Service::LaunchBackupExtension(const BundleName &bundleName)
 
         AAFwk::Want want;
         string backupExtName = session_->GetBackupExtName(bundleName);            /* new device app ext name */
+        HILOGD("backupExtName: %{public}s, bundleName: %{public}s", backupExtName.data(), bundleName.data());
         string versionName = session_->GetBundleVersionName(bundleName);          /* old device app version name */
         uint32_t versionCode = session_->GetBundleVersionCode(bundleName);        /* old device app version code */
         RestoreTypeEnum restoreType = session_->GetBundleRestoreType(bundleName); /* app restore type */
diff --git a/services/backup_sa/src/module_ipc/svc_session_manager.cpp b/services/backup_sa/src/module_ipc/svc_session_manager.cpp
index 75712fb5f365eec3e465a8c84ebd9a2d5c1e95fa..9c9d3390d4660d0f944bff5008d6fdf54397cf1a 100644
--- a/services/backup_sa/src/module_ipc/svc_session_manager.cpp
+++ b/services/backup_sa/src/module_ipc/svc_session_manager.cpp
@@ -28,8 +28,6 @@
 #include "b_json/b_json_entity_ext_manage.h"
 #include "b_resources/b_constants.h"
 #include "filemgmt_libhilog.h"
-#include "module_external/bms_adapter.h"
-#include "module_external/sms_adapter.h"
 #include "module_ipc/service.h"
 
 namespace OHOS::FileManagement::Backup {
@@ -360,6 +358,18 @@ void SvcSessionManager::SetServiceSchedAction(const string &bundleName, BConstan
     }
 }
 
+void SvcSessionManager::SetBackupExtName(const string &bundleName, const string &backupExtName)
+{
+    HILOGI("Begin");
+    unique_lock<shared_mutex> lock(lock_);
+    if (!impl_.clientToken) {
+        throw BError(BError::Codes::SA_INVAL_ARG, "No caller token was specified");
+    }
+
+    auto it = GetBackupExtNameMap(bundleName);
+    it->second.backupExtName = backupExtName;
+}
+
 string SvcSessionManager::GetBackupExtName(const string &bundleName)
 {
     HILOGI("Begin");
@@ -367,19 +377,9 @@ string SvcSessionManager::GetBackupExtName(const string &bundleName)
     if (!impl_.clientToken) {
         throw BError(BError::Codes::SA_INVAL_ARG, "No caller token was specified");
     }
-    string name = bundleName;
-    VerifyBundleName(name);
-    auto bundleInfos = BundleMgrAdapter::GetBundleInfos({bundleName}, impl_.userId);
-    for (auto &&bundleInfo : bundleInfos) {
-        if (!bundleInfo.allToBackup || bundleInfo.extensionName.empty()) {
-            throw BError(BError::Codes::SA_INVAL_ARG,
-                         string(bundleInfo.name).append(" is not allow to backup or extension name is empty"));
-        }
-        if (bundleInfo.name == bundleName) {
-            return bundleInfo.extensionName;
-        }
-    }
-    throw BError(BError::Codes::SA_INVAL_ARG, "Could not find the extension name");
+
+    auto it = GetBackupExtNameMap(bundleName);
+    return it->second.backupExtName;
 }
 
 void SvcSessionManager::AppendBundles(const vector<BundleName> &bundleNames)
@@ -396,6 +396,8 @@ void SvcSessionManager::AppendBundles(const vector<BundleName> &bundleNames)
         info.backUpConnection = GetBackupExtAbility(bundleName);
         impl_.backupExtNameMap.insert(make_pair(bundleName, info));
     }
+    impl_.isBackupStart = true;
+    impl_.isAppendFinish = true;
 }
 
 void SvcSessionManager::Start()
@@ -460,7 +462,7 @@ void SvcSessionManager::SetInstallState(const string &bundleName, const string &
 string SvcSessionManager::GetInstallState(const string &bundleName)
 {
     HILOGI("Begin");
-    unique_lock<shared_mutex> lock(lock_);
+    shared_lock<shared_mutex> lock(lock_);
     if (!impl_.clientToken) {
         throw BError(BError::Codes::SA_INVAL_ARG, "No caller token was specified");
     }
@@ -484,7 +486,7 @@ void SvcSessionManager::SetNeedToInstall(const std::string &bundleName, bool nee
 bool SvcSessionManager::GetNeedToInstall(const std::string &bundleName)
 {
     HILOGI("Begin");
-    unique_lock<shared_mutex> lock(lock_);
+    shared_lock<shared_mutex> lock(lock_);
     if (!impl_.clientToken) {
         throw BError(BError::Codes::SA_INVAL_ARG, "No caller token was specified");
     }
@@ -515,7 +517,7 @@ void SvcSessionManager::SetBundleRestoreType(const std::string &bundleName, Rest
 
 RestoreTypeEnum SvcSessionManager::GetBundleRestoreType(const std::string &bundleName)
 {
-    unique_lock<shared_mutex> lock(lock_);
+    shared_lock<shared_mutex> lock(lock_);
     if (!impl_.clientToken) {
         throw BError(BError::Codes::SA_INVAL_ARG, "No caller token was specified");
     }
@@ -537,7 +539,7 @@ void SvcSessionManager::SetBundleVersionCode(const std::string &bundleName, uint
 
 uint32_t SvcSessionManager::GetBundleVersionCode(const std::string &bundleName)
 {
-    unique_lock<shared_mutex> lock(lock_);
+    shared_lock<shared_mutex> lock(lock_);
     if (!impl_.clientToken) {
         throw BError(BError::Codes::SA_INVAL_ARG, "No caller token was specified");
     }
@@ -559,7 +561,7 @@ void SvcSessionManager::SetBundleVersionName(const std::string &bundleName, std:
 
 std::string SvcSessionManager::GetBundleVersionName(const std::string &bundleName)
 {
-    unique_lock<shared_mutex> lock(lock_);
+    shared_lock<shared_mutex> lock(lock_);
     if (!impl_.clientToken) {
         throw BError(BError::Codes::SA_INVAL_ARG, "No caller token was specified");
     }
@@ -634,5 +636,4 @@ void SvcSessionManager::BundleExtTimerStop(const std::string &bundleName)
         extBundleTimer.Unregister(it->second.extTimerId);
     }
 }
-
-} // namespace OHOS::FileManagement::Backup-
+} // namespace OHOS::FileManagement::Backup
diff --git a/tests/mock/module_ipc/svc_session_manager_mock.cpp b/tests/mock/module_ipc/svc_session_manager_mock.cpp
index 07e6a5832c4f471fb398101f52bc21fc11558ac8..45dd0126ef941a2eb505d0a9289dbb0a82fa293d 100644
--- a/tests/mock/module_ipc/svc_session_manager_mock.cpp
+++ b/tests/mock/module_ipc/svc_session_manager_mock.cpp
@@ -320,4 +320,5 @@ void SvcSessionManager::BundleExtTimerStart (
 
 void SvcSessionManager::BundleExtTimerStop(const std::string &bundleName) {}
 
+void SvcSessionManager::SetBackupExtName(const string &bundleName, const string &backupExtName) {}
 } // namespace OHOS::FileManagement::Backup
diff --git a/tests/unittests/backup_sa/module_ipc/svc_session_manager_test.cpp b/tests/unittests/backup_sa/module_ipc/svc_session_manager_test.cpp
index a393297fc86353832f9958438212307f41b05001..f3e04a938d306c096027e4aa00ad52e23a66080f 100644
--- a/tests/unittests/backup_sa/module_ipc/svc_session_manager_test.cpp
+++ b/tests/unittests/backup_sa/module_ipc/svc_session_manager_test.cpp
@@ -339,6 +339,7 @@ HWTEST_F(SvcSessionManagerTest, SUB_backup_sa_session_GetBackupExtName_0100, tes
 {
     GTEST_LOG_(INFO) << "SvcSessionManagerTest-begin SUB_backup_sa_session_GetBackupExtName_0100";
     try {
+        sessionManagerPtr_->SetBackupExtName(BUNDLE_NAME, BUNDLE_NAME);
         string extName = sessionManagerPtr_->GetBackupExtName(BUNDLE_NAME);
         EXPECT_EQ(extName, BUNDLE_NAME);
     } catch (...) {