diff --git a/examples/routers/progress.vue b/examples/routers/progress.vue
index e69459e2..357d93e5 100644
--- a/examples/routers/progress.vue
+++ b/examples/routers/progress.vue
@@ -1,15 +1,15 @@
 <template>
     <div>
-        <Progress :percent="percent"></Progress>
+        <i-progress :percent="percent"></i-progress>
         <Button-group size="large">
             <Button icon="ios-plus-empty" @click.native="add"></Button>
             <Button icon="ios-minus-empty" @click.native="minus"></Button>
         </Button-group>
-        <Progress :percent="25" :stroke-width="5"></Progress>
-        <Progress :percent="100">
+        <i-progress :percent="25" :stroke-width="5"></i-progress>
+        <i-progress :percent="100">
             <Icon type="checkmark-circled"></Icon>
             <span>成功</span>
-        </Progress>
+        </i-progress>
     </div>
 </template>
 <script>
diff --git a/examples/routers/steps.vue b/examples/routers/steps.vue
index 8b63203c..fc264494 100644
--- a/examples/routers/steps.vue
+++ b/examples/routers/steps.vue
@@ -45,7 +45,7 @@
         <Step title="步骤4"></Step>
     </Steps>
     <br>
-    <Button type="primary" @click.native="next">下一步</Button>
+    <i-button type="primary" @click.native="next">下一步</i-button>
     <br><br><br>
     <Steps :current="1" direction="vertical" size="small">
         <Step title="已完成" content="这里是该步骤的描述信息这里是该步骤的描述信息这里是该步骤的描述信息"></Step>
@@ -63,16 +63,7 @@
 </div>
 </template>
 <script>
-    import { Steps, Button } from 'iview';
-
-    const Step = Steps.Step;
-
     export default {
-        components: {
-            Steps,
-            Step,
-            Button
-        },
         props: {
 
         },
diff --git a/examples/routers/upload.vue b/examples/routers/upload.vue
index 99157730..62c97c15 100644
--- a/examples/routers/upload.vue
+++ b/examples/routers/upload.vue
@@ -9,7 +9,7 @@
                 </div>
             </template>
             <template v-else>
-                <Progress v-if="item.showProgress" :percent="item.percentage" hide-info></Progress>
+                <i-progress v-if="item.showProgress" :percent="item.percentage" hide-info></i-progress>
             </template>
         </div>
         <Upload
diff --git a/src/components/cascader/caspanel.vue b/src/components/cascader/caspanel.vue
index 804092f0..7a7adb8d 100644
--- a/src/components/cascader/caspanel.vue
+++ b/src/components/cascader/caspanel.vue
@@ -3,6 +3,7 @@
         <ul v-if="data && data.length" :class="[prefixCls + '-menu']">
             <Casitem
                 v-for="item in data"
+                :key="item"
                 :prefix-cls="prefixCls"
                 :data="item"
                 :tmp-item="tmpItem"
diff --git a/src/components/page/options.vue b/src/components/page/options.vue
index 00daeec3..ead5b4ea 100644
--- a/src/components/page/options.vue
+++ b/src/components/page/options.vue
@@ -2,7 +2,7 @@
     <div v-if="showSizer || showElevator" :class="optsClasses">
         <div v-if="showSizer" :class="sizerClasses">
             <i-select v-model="currentPageSize" :size="size" @on-change="changeSize">
-                <i-option v-for="item in pageSizeOpts" :value="item" style="text-align:center;">{{ item }} {{ t('i.page.page') }}</i-option>
+                <i-option v-for="item in pageSizeOpts" :key="item" :value="item" style="text-align:center;">{{ item }} {{ t('i.page.page') }}</i-option>
             </i-select>
         </div>
         <div v-if="showElevator" :class="ElevatorClasses">
diff --git a/src/components/upload/upload-list.vue b/src/components/upload/upload-list.vue
index 2e86663c..c03cd748 100644
--- a/src/components/upload/upload-list.vue
+++ b/src/components/upload/upload-list.vue
@@ -13,23 +13,23 @@
                 v-show="file.status === 'finished'"
                 @click.native="handleRemove(file)"></Icon>
             <transition name="fade">
-                <Progress
+                <i-progress
                     v-if="file.showProgress"
                     :stroke-width="2"
                     :percent="parsePercentage(file.percentage)"
-                    :status="file.status === 'finished' && file.showProgress ? 'success' : 'normal'"></Progress>
+                    :status="file.status === 'finished' && file.showProgress ? 'success' : 'normal'"></i-progress>
             </transition>
         </li>
     </ul>
 </template>
 <script>
     import Icon from '../icon/icon.vue';
-    import Progress from '../progress/progress.vue';
+    import iProgress from '../progress/progress.vue';
     const prefixCls = 'ivu-upload';
 
     export default {
         name: 'UploadList',
-        components: { Icon, Progress },
+        components: { Icon, iProgress },
         props: {
             files: {
                 type: Array,