diff --git a/core/include/core/engine.h b/core/include/core/engine.h
index 33691a30d8d..52abeb3b697 100644
--- a/core/include/core/engine.h
+++ b/core/include/core/engine.h
@@ -50,8 +50,6 @@ class Engine: public std::enable_shared_from_this<Engine> {
 
   void AsyncInit(const std::shared_ptr<VMInitParam>& param = nullptr,
                  std::unique_ptr<RegisterMap> map = std::make_unique<RegisterMap>());
-  void Enter();
-  void Exit();
   std::shared_ptr<Scope> CreateScope(
       const std::string& name = "",
       std::unique_ptr<RegisterMap> map = std::unique_ptr<RegisterMap>());
@@ -84,8 +82,6 @@ class Engine: public std::enable_shared_from_this<Engine> {
   std::shared_ptr<WorkerTaskRunner> worker_task_runner_;
   std::shared_ptr<VM> vm_;
   std::unique_ptr<RegisterMap> map_;
-  std::mutex cnt_mutex_;
-  uint32_t scope_cnt_;
 #if defined(JS_V8) && !defined(V8_WITHOUT_INSPECTOR)
   std::shared_ptr<hippy::inspector::V8InspectorClientImpl> inspector_client_;
 #endif
diff --git a/core/src/engine.cc b/core/src/engine.cc
index 960ded8b5df..d0754c7925b 100644
--- a/core/src/engine.cc
+++ b/core/src/engine.cc
@@ -27,12 +27,10 @@
 
 constexpr uint32_t Engine::kDefaultWorkerPoolSize = 1;
 
-Engine::Engine() : vm_(nullptr), scope_cnt_(0) {}
+Engine::Engine() : vm_(nullptr) {}
 
 Engine::~Engine() {
   TDF_BASE_DLOG(INFO) << "~Engine";
-  std::lock_guard<std::mutex> lock(cnt_mutex_);
-  TDF_BASE_DCHECK(scope_cnt_ == 0) << "this engine is in use";
 }
 
 void Engine::TerminateRunner() {
@@ -99,15 +97,3 @@ void Engine::AsyncInit(const std::shared_ptr<VMInitParam>& param, std::unique_pt
   };
   js_runner_->PostTask(task);
 }
-
-void Engine::Enter() {
-  TDF_BASE_DLOG(INFO) << "Engine Enter";
-  std::lock_guard<std::mutex> lock(cnt_mutex_);
-  ++scope_cnt_;
-}
-
-void Engine::Exit() {
-  TDF_BASE_DLOG(INFO) << "Engine Exit";
-  std::lock_guard<std::mutex> lock(cnt_mutex_);
-  --scope_cnt_;
-}
diff --git a/core/src/scope.cc b/core/src/scope.cc
index 77a550bf109..c145d3b8b65 100644
--- a/core/src/scope.cc
+++ b/core/src/scope.cc
@@ -54,7 +54,6 @@ Scope::Scope(Engine* engine,
 
 Scope::~Scope() {
   TDF_BASE_DLOG(INFO) << "~Scope";
-  engine_->Exit();
 }
 
 void Scope::WillExit() {
@@ -91,7 +90,6 @@ void Scope::WillExit() {
 
 void Scope::Initialized() {
   TDF_BASE_DLOG(INFO) << "Scope Initialized";
-  engine_->Enter();
   context_ = engine_->GetVM()->CreateContext();
   if (context_ == nullptr) {
     TDF_BASE_DLOG(ERROR) << "CreateContext return nullptr";