diff --git a/docs/examples-docs/loading.md b/docs/examples-docs/loading.md
new file mode 100644
index 000000000..7b84a6b95
--- /dev/null
+++ b/docs/examples-docs/loading.md
@@ -0,0 +1,14 @@
+l## Switch组件
+
+### 基础用法
+
+```html
+<template>
+  <div class="page-loading">
+    <h1 class="page-title">Loading</h1>
+    <h2 class="page-sub-title">Loading展示</h2>
+    <div class="page-loading__example1">
+      <zan-loading class="some-customized-class" style="padding-top: 50px; text-align: center;"></zan-loading>
+    </div>
+  </div>
+</template>
diff --git a/docs/examples-docs/switch.md b/docs/examples-docs/switch.md
index 926b71ab7..75f11bb1e 100644
--- a/docs/examples-docs/switch.md
+++ b/docs/examples-docs/switch.md
@@ -4,17 +4,29 @@
 
 ```html
 <div class="page-switch">
-  <div class="page-switch__wrapper">
-    <o2-switch class="some-customized-class" :checked="switchState" :on-change="updateState"></o2-switch>
-    <div class="page-switch__text">{{switchStateText}}</div>
-  </div>
-  <div class="page-switch__wrapper">
-    <o2-switch class="some-customized-class" :checked="true" :disabled="true"></o2-switch>
-    <div class="page-switch__text">ON, DISABLED</div>
-  </div>
-  <div class="page-switch__wrapper">
-    <o2-switch class="some-customized-class" :checked="false" :disabled="true"></o2-switch>
-    <div class="page-switch__text">OFF, DISABLED</div>
+  <h1 class="page-title">Switch</h1>
+  <h2 class="page-sub-title">基础用法</h2>
+  <div class="page-switch">
+    <div class="page-switch__wrapper">
+      <zan-switch class="some-customized-class" :checked="switchState" :on-change="updateState"></zan-switch>
+      <div class="page-switch__text">{{switchStateText}}</div>
+    </div>
+    <div class="page-switch__wrapper">
+      <zan-switch class="some-customized-class" :checked="true" :disabled="true"></zan-switch>
+      <div class="page-switch__text">ON, DISABLED</div>
+    </div>
+    <div class="page-switch__wrapper">
+      <zan-switch class="some-customized-class" :checked="false" :disabled="true"></zan-switch>
+      <div class="page-switch__text">OFF, DISABLED</div>
+    </div>
+    <div class="page-switch__wrapper">
+      <zan-switch class="some-customized-class" :checked="true" :loading="true"></zan-switch>
+      <div class="page-switch__text">ON, LOADING</div>
+    </div>
+    <div class="page-switch__wrapper">
+      <zan-switch class="some-customized-class" :checked="false" :loading="true"></zan-switch>
+      <div class="page-switch__text">OFF, LOADING</div>
+    </div>
   </div>
 </div>
 
diff --git a/docs/examples/loading.vue b/docs/examples/loading.vue
new file mode 100644
index 000000000..fcb2289c4
--- /dev/null
+++ b/docs/examples/loading.vue
@@ -0,0 +1,9 @@
+<template>
+  <div class="page-loading">
+    <h1 class="page-title">Loading</h1>
+    <h2 class="page-sub-title">Loading展示</h2>
+    <div class="page-loading__example1">
+      <zan-loading class="some-customized-class" style="padding-top: 50px; text-align: center;"></zan-loading>
+    </div>
+  </div>
+</template>
diff --git a/docs/examples/switch.vue b/docs/examples/switch.vue
index 23bccd006..87c399acf 100644
--- a/docs/examples/switch.vue
+++ b/docs/examples/switch.vue
@@ -16,6 +16,14 @@
         <zan-switch class="some-customized-class" :checked="false" :disabled="true"></zan-switch>
         <div class="page-switch__text">OFF, DISABLED</div>
       </div>
+      <div class="page-switch__wrapper">
+        <zan-switch class="some-customized-class" :checked="true" :loading="true"></zan-switch>
+        <div class="page-switch__text">ON, LOADING</div>
+      </div>
+      <div class="page-switch__wrapper">
+        <zan-switch class="some-customized-class" :checked="false" :loading="true"></zan-switch>
+        <div class="page-switch__text">OFF, LOADING</div>
+      </div>
     </div>
   </div>
 </template>
diff --git a/packages/loading/src/loading.vue b/packages/loading/src/loading.vue
index 9048ad8d7..375c785ee 100644
--- a/packages/loading/src/loading.vue
+++ b/packages/loading/src/loading.vue
@@ -1,5 +1,7 @@
 <template>
-  <div class="zan-loading"></div>
+  <div class="zan-loading">
+  	<span class="zan-spinner"></span>
+  </div>
 </template>
 
 <script>
diff --git a/packages/switch/src/switch.vue b/packages/switch/src/switch.vue
index e889b7ade..d33794c62 100644
--- a/packages/switch/src/switch.vue
+++ b/packages/switch/src/switch.vue
@@ -1,12 +1,14 @@
 <template>
   <div class="zan-switch" :class="switchState" @click="toggleState">
-    <div class="zan-switch__node" :class="switchState"></div>
+    <div class="zan-switch__node" :class="switchState">
+      <zan-loading v-if="loading" class="zan-switch__loading"></zan-loading>
+    </div>
   </div>
 </template>
 
 <script>
 /**
- * o2-switch
+ * zan-switch
  * @module components/switch
  * @desc 开关
  * @param {boolean} [checked=false] - 开关状态
@@ -15,7 +17,7 @@
  * @param {callback} [onChange] - 开关状态改变回调函数。
  *
  * @example
- * <o2-switch checked="true" disabled="false"></o2-switch>
+ * <zan-switch checked="true" disabled="false"></zan-switch>
  */
 export default {
   name: 'zan-switch',
diff --git a/packages/zanui-css/src/loading.css b/packages/zanui-css/src/loading.css
index f9fad8428..4c7ee0d96 100644
--- a/packages/zanui-css/src/loading.css
+++ b/packages/zanui-css/src/loading.css
@@ -20,10 +20,18 @@
 }
 
 @component-namespace zan {
-  @b loading { 
-    height: 30px;
+  @b loading {
     width: 30px;
-    background: url('data:image/png;base64,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') no-repeat center;
+    height: 30px;
+    line-height: 0;
+    font-size: 0;
+  }
+
+  @b spinner { 
+    display: inline-block;
+    height: 100%;
+    width: 100%;
+    background: url('data:image/png;base64,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');
     background-size: contain;
     -webkit-animation: loading 0.8s linear;
     -webkit-animation-iteration-count: infinite;
diff --git a/packages/zanui-css/src/switch.css b/packages/zanui-css/src/switch.css
index ba9ffd8de..2cf0b1ccf 100644
--- a/packages/zanui-css/src/switch.css
+++ b/packages/zanui-css/src/switch.css
@@ -1,5 +1,5 @@
 @component-namespace zan {
-  @component switch { 
+  @b switch { 
     height: 29px;
     width: 49px;
     display: inline-block;
@@ -7,7 +7,7 @@
     position: relative;
     border: 1px solid;
 
-    @descendent node {
+    @e node {
       width: 27px;
       height: 27px;
       border-radius: 100%;
@@ -16,16 +16,25 @@
       position: absolute;
       box-shadow: 0 3px 1px 0 rgba(0, 0, 0, .05), 0 2px 2px 0 rgba(0, 0, 0, .1), 0 3px 3px 0 rgba(0, 0, 0, .05);
       @when on {
-        left: 0;
+        left: 20px;
         transition: all .5s ease-in-out;
       }
 
       @when off {
-        left: 20px;
+        left: 0;
         transition: all .5s ease-in-out;
       }
     }
 
+    @e loading {
+      width: 16px;
+      height: 16px;
+      position: relative;
+      left: 50%;
+      top: 50%;
+      transform: translate3d(-50%, -50%, 0);
+    }
+
     @when on {
       background-color: #44db5e;
       border-color: #44db5e;
@@ -36,18 +45,8 @@
       border-color: rgba(0, 0, 0, .1);
     }
 
-    @when loading {
-        /* TODO */
-    }
-
     @when disabled {
-      @when off {
-        background-color: #f2f2f2;
-        border-color: rgba(0, 0, 0, .1);
-      }
-      @when on {
-        background-color: #a6e7b1;
-      }
+      opacity: .4;
     }
   }
 }