diff --git a/zh-cn/application-dev/reference/apis/js-apis-commonEventManager.md b/zh-cn/application-dev/reference/apis/js-apis-commonEventManager.md
index 320fddb51d9a5d05354f50556929b90a66889000..b3bdfc02bd4ab3e0e3dd7081dcab3205f2b11dd8 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-commonEventManager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-commonEventManager.md
@@ -327,7 +327,7 @@ let subscribeInfo = {
 
 //订阅公共事件回调
 function SubscribeCB(err, data) {
-    if (err.code) {
+    if (err) {
         console.error(`subscribe failed, code is ${err.code}, message is ${err.message}`);
     } else {
         console.info("subscribe ");