diff --git a/docs/generator.md b/docs/generator.md
index 184f6d1..3ca20ab 100644
--- a/docs/generator.md
+++ b/docs/generator.md
@@ -1173,7 +1173,7 @@ Generator函数的暂停执行的效果，意味着可以把异步操作写在yi
 function* loadUI() {
   showLoadingScreen();
   yield loadUIDataAsynchronously();
- hideLoadingScreen();
+  hideLoadingScreen();
 }
 var loader = loadUI();
 // 加载UI