diff --git a/example/app.json b/example/app.json
index 276a6e51..8577ac7f 100644
--- a/example/app.json
+++ b/example/app.json
@@ -46,7 +46,8 @@
     "pages/circle/index",
     "pages/grid/index",
     "pages/dropdown-menu/index",
-    "pages/index-bar/index"
+    "pages/index-bar/index",
+    "pages/skeleton/index"
   ],
   "window": {
     "navigationBarBackgroundColor": "#f8f8f8",
diff --git a/packages/skeleton/index.wxml b/packages/skeleton/index.wxml
index 154d299d..4b17d3b6 100644
--- a/packages/skeleton/index.wxml
+++ b/packages/skeleton/index.wxml
@@ -17,6 +17,7 @@
     />
     <view
       wx:for="row"
+      wx:key="index"
       wx:for-index="index"
       class="{{ utils.bem('skeleton__row') }}"
       style="{{ 'width:' + (isArray ? rowWidth[index] : rowWidth) }}"