diff --git a/ecmascript/runtime.cpp b/ecmascript/runtime.cpp
index 1f5a2376c1..f77165eca6 100644
--- a/ecmascript/runtime.cpp
+++ b/ecmascript/runtime.cpp
@@ -166,6 +166,11 @@ void Runtime::ResumeAll(JSThread *current)
 void Runtime::SuspendAllThreadsImpl(JSThread *current)
 {
     LockHolder lock(threadsLock_);
+    while (suspendNewCount_ != 0) {
+        // Someone has already suspended all threads.
+        // Wait until it finishes.
+        threadSuspendCondVar_.Wait(&threadsLock_);
+    }
     suspendNewCount_++;
     for (auto i : threads_) {
         if (i != current) {
@@ -180,6 +185,10 @@ void Runtime::ResumeAllThreadsImpl(JSThread *current)
     if (suspendNewCount_ > 0) {
         suspendNewCount_--;
     }
+    if (suspendNewCount_ == 0) {
+        // Signal to waiting to suspend threads
+        threadSuspendCondVar_.Signal();
+    }
     for (auto i : threads_) {
         if (i != current) {
             i->ResumeThread(true);
diff --git a/ecmascript/runtime.h b/ecmascript/runtime.h
index a0dbcc9045..3fb1b29c66 100644
--- a/ecmascript/runtime.h
+++ b/ecmascript/runtime.h
@@ -161,6 +161,7 @@ private:
     }
 
     Mutex threadsLock_;
+    ConditionVariable threadSuspendCondVar_;
     Mutex serializeLock_;
     std::list<JSThread*> threads_;
     uint32_t suspendNewCount_ {0};