diff --git a/packages/icon/index.less b/packages/icon/index.less
index 6adff008..9dd9df34 100644
--- a/packages/icon/index.less
+++ b/packages/icon/index.less
@@ -2,6 +2,7 @@
 @import '@vant/icons/src/index.less';
 
 :host {
+  position: relative;
   display: inline-flex;
   align-items: center;
   justify-content: center;
diff --git a/packages/icon/index.wxs b/packages/icon/index.wxs
index e29ecd0c..45e3aa0a 100644
--- a/packages/icon/index.wxs
+++ b/packages/icon/index.wxs
@@ -13,10 +13,6 @@ function rootClass(data) {
     classes.push(data.classPrefix);
   }
 
-  if (data.classPrefix !== 'van-icon') {
-    classes.push('van-icon')
-  }
-
   if (isImage(data.name)) {
     classes.push('van-icon--image');
   } else if (data.classPrefix != null) {