diff --git a/src/field/index.less b/src/field/index.less
index f4eb83164..6a250d4ab 100644
--- a/src/field/index.less
+++ b/src/field/index.less
@@ -76,26 +76,12 @@
     font-size: @field-clear-icon-size;
   }
 
-  &__left-icon,
-  &__right-icon {
-    position: relative;
-
-    .van-icon {
-      display: block;
-      min-width: 1em;
-      font-size: @field-icon-size;
-      line-height: inherit;
-    }
-
-    // increase clickable area size
-    &::after {
-      position: absolute;
-      top: -5px;
-      right: -5px;
-      bottom: -5px;
-      left: -5px;
-      content: '';
-    }
+  &__left-icon .van-icon,
+  &__right-icon .van-icon {
+    display: block;
+    min-width: 1em;
+    font-size: @field-icon-size;
+    line-height: inherit;
   }
 
   &__left-icon {