diff --git a/zh-cn/application-dev/ui/ui-js-components-button.md b/zh-cn/application-dev/ui/ui-js-components-button.md
index c36d2109388def1eb807597d9565256b3a3c9d65..52ae1c820ab4cc1c16c4196cc820697380705b8c 100644
--- a/zh-cn/application-dev/ui/ui-js-components-button.md
+++ b/zh-cn/application-dev/ui/ui-js-components-button.md
@@ -157,7 +157,7 @@ export default {
  setProgress(e) {
     if(this.isPaused){
       prompt.showToast({
-        message: "Started Ddownloading"
+        message: "Started Downloading"
       })
       this.star();
       this.isPaused = false;