diff --git a/zh-cn/application-dev/reference/apis/js-apis-request.md b/zh-cn/application-dev/reference/apis/js-apis-request.md
index 1a5aa32c3cc2a683397407f88ff465d2b60bb4df..e2924180fc57ffe4753ac2b2d017d37e3b938bb2 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-request.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-request.md
@@ -421,7 +421,7 @@ off(type: 'headerReceive', callback?: (header: object) => void): void
 
   ```js
   let headerCallback = (header) => {
-      console.info('Upload delete headerReceive notification.' + 'header: ${JSON.stringify(header)}');
+      console.info(`Upload delete headerReceive notification. header: ${JSON.stringify(header)}`);
   };
   uploadTask.off('headerReceive', headerCallback);
   ```
@@ -1010,7 +1010,7 @@ off(type: 'fail', callback?: (err: number) => void): void
 
   ```js
   let failCallback = (err) => {
-      console.info('Download delete fail notification.' + 'err: ${err.message}');
+      console.info(`Download delete fail notification. err: ${err.message}`);
   };
   downloadTask.off('fail', failCallback);
   ```