diff --git a/zh-cn/application-dev/reference/apis/js-apis-inputdevice.md b/zh-cn/application-dev/reference/apis/js-apis-inputdevice.md
index 902b060a0fe746ce5b2fa529e62a088d25d2190d..e7536e336b6cd7f61d2822276ad5d91703427f41 100755
--- a/zh-cn/application-dev/reference/apis/js-apis-inputdevice.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-inputdevice.md
@@ -73,6 +73,9 @@ function listener(data) {
     console.log("type: " + data.type + ", deviceId: " + data.deviceId);
 }
 
+// 监听输入设备的热插拔事件
+inputDevice.on("change", listener);
+
 // 单独取消listener的监听。
 inputDevice.off("change", listener);