diff --git a/paddle/fluid/framework/threadpool.cc b/paddle/fluid/framework/threadpool.cc
index 3d42aea229dbd26fa69a593babe10f76b478c1e2..defbd7625d0ca5fdc57f4d7e511a8f10a5452e2f 100644
--- a/paddle/fluid/framework/threadpool.cc
+++ b/paddle/fluid/framework/threadpool.cc
@@ -52,8 +52,7 @@ void ThreadPool::Init() {
   }
 }
 
-ThreadPool::ThreadPool(int num_threads)
-    : total_threads_(num_threads), idle_threads_(num_threads), running_(true) {
+ThreadPool::ThreadPool(int num_threads) : running_(true) {
   threads_.resize(num_threads);
   for (auto& thread : threads_) {
     // TODO(Yancey1989): binding the thread on the specify CPU number
@@ -82,7 +81,6 @@ void ThreadPool::TaskLoop() {
     scheduled_.wait(
         lock, [this] { return !this->tasks_.empty() || !this->running_; });
 
-    std::lock_guard<std::mutex> l(mutex_);
     if (!running_ || tasks_.empty()) {
       return;
     }
@@ -90,8 +88,6 @@ void ThreadPool::TaskLoop() {
     // pop a task from the task queue
     auto task = std::move(tasks_.front());
     tasks_.pop();
-
-    --idle_threads_;
     lock.unlock();
 
     // run the task
diff --git a/paddle/fluid/framework/threadpool.h b/paddle/fluid/framework/threadpool.h
index 459aba9ef41039a3423a9dd93b2689a94916c774..745dcc7c7d4a20ad1c8b4023f360a0ccda076114 100644
--- a/paddle/fluid/framework/threadpool.h
+++ b/paddle/fluid/framework/threadpool.h
@@ -107,14 +107,11 @@ class ThreadPool {
   static std::once_flag init_flag_;
 
   std::vector<std::unique_ptr<std::thread>> threads_;
-  const size_t total_threads_;
-  size_t idle_threads_;
 
   std::queue<Task> tasks_;
   std::mutex mutex_;
   bool running_;
   std::condition_variable scheduled_;
-  std::condition_variable completed_;
 };
 
 class ThreadPoolIO : ThreadPool {