diff --git a/packages/maptalks/src/core/worker/WorkerPool.ts b/packages/maptalks/src/core/worker/WorkerPool.ts
index 9ee37a2923..9ee3a7a251 100644
--- a/packages/maptalks/src/core/worker/WorkerPool.ts
+++ b/packages/maptalks/src/core/worker/WorkerPool.ts
@@ -55,8 +55,11 @@ export default class WorkerPool {
     _messages: MessageBatch[][]
     //@internal
     _messageBuffers: ArrayBuffer[]
+    //@internal
+    _idleLoopCount: number;
     workers: Worker[]
     constructor() {
+        this._idleLoopCount = 0;
         this.active = {};
         this.workerCount = typeof window !== 'undefined' ? (GlobalConfig.workerCount || hardwareWorkerCount) : 0;
         this._messages = [];
@@ -125,9 +128,16 @@ export default class WorkerPool {
     }
 
     broadcastIdleMessage(messageRatio: number) {
+        //目前idle空转情况严重,没有必要频率这么高,简单的限制下
+        if (this._idleLoopCount < 3) {
+            this._idleLoopCount++;
+            return this;
+        }
+        this._idleLoopCount = 0;
         const workers = this.getWorkers();
+        const message = { messageType: 'idle', messageRatio };
         workers.forEach(worker => {
-            worker.postMessage({ messageType: 'idle', messageRatio });
+            worker.postMessage(message);
         });
         return this;
     }