diff --git a/index.html b/index.html
index a1c51d4..5fe4e1d 100644
--- a/index.html
+++ b/index.html
@@ -485,9 +485,9 @@
       <option value="heti--serif">宋体</option>
     </select>
     <select id="J_showGrid">
-      <option value="grid-24">显示网格（24px）</option>
+      <option value="grid-24" selected>显示网格（24px）</option>
       <option value="grid-12">显示网格（12px）</option>
-      <option value="" selected>不显示网格</option>
+      <option value="">不显示网格</option>
     </select>
   </div>