diff --git a/docs/api/animation-frame.md b/docs/api/animation-frame.md
index b042962ab00cc60aa0919dc308bad246010d0559..76bfad3b6b3b42ab2ce2682c1d44ee9c0fb05205 100644
--- a/docs/api/animation-frame.md
+++ b/docs/api/animation-frame.md
@@ -25,3 +25,6 @@
 <!-- UTSJSON.Global.cancelAnimationFrame.compatibility -->
 
 <!-- UTSJSON.Global.cancelAnimationFrame.tutorial -->
+
+**提示**
+- requestanimationframe/cancelanimationframe 为全局 API，如果需要跨平台处理 canvas 动画需要使用 [uni.createCanvasContextAsync]("./create-canvas-context-async.md")