diff --git a/src/gausskernel/process/threadpool/threadpool_worker.cpp b/src/gausskernel/process/threadpool/threadpool_worker.cpp
index 43c58ae3a..6bc341d32 100644
--- a/src/gausskernel/process/threadpool/threadpool_worker.cpp
+++ b/src/gausskernel/process/threadpool/threadpool_worker.cpp
@@ -82,6 +82,7 @@ ThreadPoolWorker::ThreadPoolWorker(uint idx, ThreadPoolGroup* group, pthread_mut
     m_group = group;
     m_tid = InvalidTid;
     m_threadStatus = THREAD_UNINIT;
+    m_thrd_idle_waiting = false;
     m_currentSession = NULL;
     m_mutex = mutex;
     m_cond = cond;
@@ -280,7 +281,8 @@ bool ThreadPoolWorker::WakeUpToPendingIfFree()
 {
     bool ans = false;
     pthread_mutex_lock(m_mutex);
-    if (m_threadStatus != THREAD_EXIT && m_threadStatus != THREAD_PENDING && m_currentSession == NULL) {
+    if (m_threadStatus != THREAD_EXIT && m_threadStatus != THREAD_PENDING && m_currentSession == NULL &&
+        m_thrd_idle_waiting) {
         m_threadStatus = THREAD_PENDING;
         pthread_cond_signal(m_cond);
         ans = true;
@@ -439,7 +441,9 @@ void ThreadPoolWorker::WaitNextSession()
                 if (unlikely(m_threadStatus == THREAD_PENDING || m_threadStatus == THREAD_EXIT)) {
                     break;
                 }
+                m_thrd_idle_waiting = true;
                 pthread_cond_wait(m_cond, m_mutex);
+                m_thrd_idle_waiting = false;
             }
             pthread_mutex_unlock(m_mutex);
             m_group->GetListener()->RemoveWorkerFromList(this);
diff --git a/src/include/threadpool/threadpool_worker.h b/src/include/threadpool/threadpool_worker.h
index f2ca99158..d17abedc7 100644
--- a/src/include/threadpool/threadpool_worker.h
+++ b/src/include/threadpool/threadpool_worker.h
@@ -145,6 +145,7 @@ private:
     uint m_idx;
     knl_session_context* m_currentSession;
     volatile ThreadStatus m_threadStatus;
+    bool m_thrd_idle_waiting;
     ThreadStayReason m_reason;
     Dlelem m_elem;
     ThreadPoolGroup* m_group;