diff --git a/packages-user/client-modules/src/render/map/extension/text.ts b/packages-user/client-modules/src/render/map/extension/text.ts
index 245815f..6a230fc 100644
--- a/packages-user/client-modules/src/render/map/extension/text.ts
+++ b/packages-user/client-modules/src/render/map/extension/text.ts
@@ -151,6 +151,10 @@ export class OnMapTextRenderer
         return this.canvas;
     }
 
+    /**
+     * 获取分块所附着的文字数据
+     * @param blockData 分块数据
+     */
     private getAttachedMap(
         blockData: IBlockData<IMapVertexBlock>
     ): Map<number, MapTextArea> {