diff --git a/docs/component/canvas.md b/docs/component/canvas.md
index 206670664176c01e5d9ce8997d0786acb76f96ff..382b72d6c05b4ca94d33f9dfc8051493ecb84247 100644
--- a/docs/component/canvas.md
+++ b/docs/component/canvas.md
@@ -20,7 +20,7 @@
 
 和 W3C 规范保持一致 [https://developer.mozilla.org/zh-CN/docs/Web/HTML/Element/canvas](https://developer.mozilla.org/zh-CN/docs/Web/HTML/Element/canvas)
 
-**注意事项**@hidpi
+## 注意事项@hidpi
 
 uni-app 1 canvas 组件内部默认处理了高清逻辑，uni-app x 和 W3C 规范一致，需要开发者根据自己的场景手动处理