diff --git a/docs/api/polygon_layer/extrude.zh.md b/docs/api/polygon_layer/extrude.zh.md
index beedd15062..d08b97039e 100644
--- a/docs/api/polygon_layer/extrude.zh.md
+++ b/docs/api/polygon_layer/extrude.zh.md
@@ -94,10 +94,11 @@ const provincelayer = new PolygonLayer({})
 ```
 
 - topsurface: boolean
-控制顶面的显隐，默认为 true
+  控制顶面的显隐，默认为 true
 
 - sidesurface: boolean
-控制侧面的显隐，默认为 true
+  控制侧面的显隐，默认为 true
+
 
 [在线案例](/zh/examples/polygon/3d#texture3D)