diff --git a/components/layout/index.md b/components/layout/index.md
index ff186f0103..fc461466ff 100644
--- a/components/layout/index.md
+++ b/components/layout/index.md
@@ -8,6 +8,8 @@
 
 ## 设计理念
 
+24 栅格系统。
+
 <div class="row demo-row" >
   <div class="col-24 demo-col demo-col-1">
     100%
@@ -130,4 +132,4 @@
 .hight-80 {
 	height: 80px;
 }
-</style>
\ No newline at end of file
+</style>