diff --git a/packages/field/src/field.vue b/packages/field/src/field.vue
index c6eda14b1..f2c542e27 100644
--- a/packages/field/src/field.vue
+++ b/packages/field/src/field.vue
@@ -37,7 +37,7 @@
       :maxlength="maxlength"
       :disabled="disabled"
       :readonly="readonly">
-    <van-icon v-if="icon" :name="icon" class="van-field__icon" @click="onIconClick"></van-icon>
+    <van-icon v-if="icon && currentValue" :name="icon" class="van-field__icon" @click="onIconClick"></van-icon>
   </van-cell>
 </template>
 
diff --git a/packages/vant-css/src/switch.css b/packages/vant-css/src/switch.css
index 346bc03e5..2da558bca 100644
--- a/packages/vant-css/src/switch.css
+++ b/packages/vant-css/src/switch.css
@@ -1,7 +1,7 @@
 @import './mixins/border_retina.css';
 
 @component-namespace van {
-  @b switch { 
+  @b switch {
     height: 31px;
     width: 51px;
     display: inline-block;
@@ -24,6 +24,7 @@
       left: 1px;
       top: 1px;
       z-index: 2;
+      transition: transform .3s;
       &::after {
         @mixin border-retina (top, right, bottom, left), rgba(0, 0, 0, .1);
         border-radius: 27px;