diff --git a/frameworks/native/backup_kit_inner/src/b_session_backup.cpp b/frameworks/native/backup_kit_inner/src/b_session_backup.cpp
index a798cd391e4e599edd295420b9216de9f476986c..e3b4d3e93a9f77948fd1ec22e835fb03eec3af43 100644
--- a/frameworks/native/backup_kit_inner/src/b_session_backup.cpp
+++ b/frameworks/native/backup_kit_inner/src/b_session_backup.cpp
@@ -76,6 +76,7 @@ void BSessionBackup::RegisterBackupServiceDied(std::function<void()> functor)
     }
 
     auto callback = [functor](const wptr<IRemoteObject> &obj) {
+        ServiceProxy::InvaildInstance();
         HILOGI("Backup service died");
         functor();
     };
diff --git a/frameworks/native/backup_kit_inner/src/b_session_restore.cpp b/frameworks/native/backup_kit_inner/src/b_session_restore.cpp
index f640d7abf6320dec4c101480a05843acea9154ab..f6d917f3caba3a3b16a0615ba9a074006203a172 100644
--- a/frameworks/native/backup_kit_inner/src/b_session_restore.cpp
+++ b/frameworks/native/backup_kit_inner/src/b_session_restore.cpp
@@ -125,6 +125,7 @@ void BSessionRestore::RegisterBackupServiceDied(std::function<void()> functor)
 
     auto callback = [functor](const wptr<IRemoteObject> &obj) {
         HILOGI("Backup service died");
+        ServiceProxy::InvaildInstance();
         functor();
     };
     deathRecipient_ = sptr(new SvcDeathRecipient(callback));
diff --git a/frameworks/native/backup_kit_inner/src/service_proxy.cpp b/frameworks/native/backup_kit_inner/src/service_proxy.cpp
index 707a5468a6e857190c45a1eedd4d750571162e36..6dbc42205ce8d7aa54891d0666dd686b1691f657 100644
--- a/frameworks/native/backup_kit_inner/src/service_proxy.cpp
+++ b/frameworks/native/backup_kit_inner/src/service_proxy.cpp
@@ -319,6 +319,13 @@ sptr<IService> ServiceProxy::GetInstance()
     return serviceProxy_;
 }
 
+void ServiceProxy::InvaildInstance()
+{
+    HILOGI("invalid instance");
+    unique_lock<mutex> lock(proxyMutex_);
+    serviceProxy_ = nullptr;
+}
+
 void ServiceProxy::ServiceProxyLoadCallback::OnLoadSystemAbilitySuccess(int32_t systemAbilityId,
                                                                         const OHOS::sptr<IRemoteObject> &remoteObject)
 {
diff --git a/interfaces/inner_api/native/backup_kit_inner/impl/service_proxy.h b/interfaces/inner_api/native/backup_kit_inner/impl/service_proxy.h
index 8033b7f10e2c0304f6400db97e24818d8babb043..4e9aaea6d821b8d29993ddf111bda1ba8416167c 100644
--- a/interfaces/inner_api/native/backup_kit_inner/impl/service_proxy.h
+++ b/interfaces/inner_api/native/backup_kit_inner/impl/service_proxy.h
@@ -46,6 +46,7 @@ public:
 
 public:
     static sptr<IService> GetInstance();
+    static void InvaildInstance();
 
 public:
     class ServiceProxyLoadCallback : public SystemAbilityLoadCallbackStub {
diff --git a/tests/mock/backup_kit_inner/service_proxy_mock.cpp b/tests/mock/backup_kit_inner/service_proxy_mock.cpp
index 6844d16bc5b7d9168a973de6d51c9b16f149957e..31536b973b1d54b1d5c214988e4461a5b51ccb35 100644
--- a/tests/mock/backup_kit_inner/service_proxy_mock.cpp
+++ b/tests/mock/backup_kit_inner/service_proxy_mock.cpp
@@ -110,6 +110,11 @@ sptr<IService> ServiceProxy::GetInstance()
     return serviceProxy_;
 }
 
+void ServiceProxy::InvaildInstance()
+{
+    serviceProxy_ = nullptr;
+}
+
 void ServiceProxy::ServiceProxyLoadCallback::OnLoadSystemAbilitySuccess(int32_t systemAbilityId,
                                                                         const OHOS::sptr<IRemoteObject> &remoteObject)
 {