diff --git a/services/backup_sa/src/module_ipc/service_incremental.cpp b/services/backup_sa/src/module_ipc/service_incremental.cpp
index ec65795dca61171b170f36ca22c429cc55420357..37cc5996a1fb794bad6eeb19de17484e3f9fe1e4 100644
--- a/services/backup_sa/src/module_ipc/service_incremental.cpp
+++ b/services/backup_sa/src/module_ipc/service_incremental.cpp
@@ -39,6 +39,7 @@
 #include "filemgmt_libhilog.h"
 #include "ipc_skeleton.h"
 #include "module_external/bms_adapter.h"
+#include "module_external/sms_adapter.h"
 #include "module_ipc/svc_backup_connection.h"
 #include "module_ipc/svc_restore_deps_manager.h"
 #include "parameter.h"
@@ -71,6 +72,12 @@ ErrCode Service::Release()
     HITRACE_METER_NAME(HITRACE_TAG_FILEMANAGEMENT, __PRETTY_FUNCTION__);
     HILOGI("KILL");
     VerifyCaller(session_->GetScenario());
+    int32_t oldMemoryParaSize = BConstants::DEFAULT_VFS_CACHE_PRESSURE;
+    if (session_ != nullptr) {
+        oldMemoryParaSize = session_->GetMemParaCurSize();
+    }
+    StorageMgrAdapter::UpdateMemPara(oldMemoryParaSize);
+    HILOGI("Release, set back to oldSize %{public}d", oldMemoryParaSize);
     SessionDeactive();
     return BError(BError::Codes::OK);
 }
@@ -127,6 +134,9 @@ ErrCode Service::InitIncrementalBackupSession(sptr<IServiceReverse> remote)
     HILOGI("Begin");
     try {
         VerifyCaller();
+        int32_t oldSize = StorageMgrAdapter::UpdateMemPara(BConstants::BACKUP_VFS_CACHE_PRESSURE);
+        HILOGI("InitBackupSession oldSize %{public}d", oldSize);
+        session_->SetMemParaCurSize(oldSize);
         session_->Active({.clientToken = IPCSkeleton::GetCallingTokenID(),
                           .scenario = IServiceReverse::Scenario::BACKUP,
                           .clientProxy = remote,