diff --git a/src/sidebar-item/index.js b/src/sidebar-item/index.js
index 16950ed4a..3711310d2 100644
--- a/src/sidebar-item/index.js
+++ b/src/sidebar-item/index.js
@@ -1,7 +1,6 @@
 import { createNamespace } from '../utils';
 import { ChildrenMixin } from '../mixins/relation';
 import { route, routeProps } from '../utils/router';
-import { BORDER } from '../utils/constant';
 import Info from '../info';
 
 const [createComponent, bem] = createNamespace('sidebar-item');
@@ -38,7 +37,7 @@ export default createComponent({
   render() {
     return (
       <a
-        class={[bem({ select: this.select, disabled: this.disabled }), BORDER]}
+        class={bem({ select: this.select, disabled: this.disabled })}
         onClick={this.onClick}
       >
         <div class={bem('text')}>
diff --git a/src/sidebar/index.js b/src/sidebar/index.js
index 89a80fcdd..e9c361df7 100644
--- a/src/sidebar/index.js
+++ b/src/sidebar/index.js
@@ -1,6 +1,5 @@
 import { createNamespace } from '../utils';
 import { ParentMixin } from '../mixins/relation';
-import { BORDER_TOP_BOTTOM } from '../utils/constant';
 
 const [createComponent, bem] = createNamespace('sidebar');
 
@@ -19,6 +18,6 @@ export default createComponent({
   },
 
   render() {
-    return <div class={[bem(), BORDER_TOP_BOTTOM]}>{this.slots()}</div>;
+    return <div class={bem()}>{this.slots()}</div>;
   }
 });
diff --git a/src/sidebar/test/__snapshots__/demo.spec.js.snap b/src/sidebar/test/__snapshots__/demo.spec.js.snap
index b8a4ba9f2..e9b4d49a5 100644
--- a/src/sidebar/test/__snapshots__/demo.spec.js.snap
+++ b/src/sidebar/test/__snapshots__/demo.spec.js.snap
@@ -6,15 +6,15 @@ exports[`renders demo correctly 1`] = `
     <div class="van-grid-item" style="flex-basis: 50%;">
       <div class="van-grid-item__content van-grid-item__content--center">
         <h3 class="demo-sidebar-title">基础用法</h3>
-        <div class="van-sidebar van-hairline--top-bottom"><a class="van-sidebar-item van-sidebar-item--select van-hairline">
+        <div class="van-sidebar"><a class="van-sidebar-item van-sidebar-item--select">
             <div class="van-sidebar-item__text">标签名
               <!---->
             </div>
-          </a> <a class="van-sidebar-item van-hairline">
+          </a> <a class="van-sidebar-item">
             <div class="van-sidebar-item__text">标签名
               <!---->
             </div>
-          </a> <a class="van-sidebar-item van-hairline">
+          </a> <a class="van-sidebar-item">
             <div class="van-sidebar-item__text">标签名
               <!---->
             </div>
@@ -24,13 +24,13 @@ exports[`renders demo correctly 1`] = `
     <div class="van-grid-item" style="flex-basis: 50%;">
       <div class="van-grid-item__content van-grid-item__content--center">
         <h3 class="demo-sidebar-title">显示徽标</h3>
-        <div class="van-sidebar van-hairline--top-bottom"><a class="van-sidebar-item van-sidebar-item--select van-hairline">
+        <div class="van-sidebar"><a class="van-sidebar-item van-sidebar-item--select">
             <div class="van-sidebar-item__text">标签名<div class="van-info van-sidebar-item__info">8</div>
             </div>
-          </a> <a class="van-sidebar-item van-hairline">
+          </a> <a class="van-sidebar-item">
             <div class="van-sidebar-item__text">标签名<div class="van-info van-sidebar-item__info">99</div>
             </div>
-          </a> <a class="van-sidebar-item van-hairline">
+          </a> <a class="van-sidebar-item">
             <div class="van-sidebar-item__text">标签名<div class="van-info van-sidebar-item__info">99+</div>
             </div>
           </a></div>
@@ -39,15 +39,15 @@ exports[`renders demo correctly 1`] = `
     <div class="van-grid-item" style="flex-basis: 50%;">
       <div class="van-grid-item__content van-grid-item__content--center">
         <h3 class="demo-sidebar-title">禁用选项</h3>
-        <div class="van-sidebar van-hairline--top-bottom"><a class="van-sidebar-item van-sidebar-item--select van-hairline">
+        <div class="van-sidebar"><a class="van-sidebar-item van-sidebar-item--select">
             <div class="van-sidebar-item__text">标签名
               <!---->
             </div>
-          </a> <a class="van-sidebar-item van-sidebar-item--disabled van-hairline">
+          </a> <a class="van-sidebar-item van-sidebar-item--disabled">
             <div class="van-sidebar-item__text">标签名
               <!---->
             </div>
-          </a> <a class="van-sidebar-item van-hairline">
+          </a> <a class="van-sidebar-item">
             <div class="van-sidebar-item__text">标签名
               <!---->
             </div>