diff --git a/zh-cn/application-dev/reference/apis/js-apis-uitest.md b/zh-cn/application-dev/reference/apis/js-apis-uitest.md
index 97ec1fc917f2e6851962f4955bc98a69ccac89a6..f532dfc53caa5900ebc8fd7a61991e2895d38228 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-uitest.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-uitest.md
@@ -2093,7 +2093,7 @@ fling(from: Point, to: Point, stepLen: number, speed: number): Promise\<void>
 ```js
 async function demo() {
     let driver = Driver.create();
-    await driver.fling({x: 500, Y: 480},{x: 450, Y: 480},5,600);
+    await driver.fling({x: 500, y: 480},{x: 450, y: 480},5,600);
 }
 ```