diff --git a/assets/iview.png b/assets/iview.png
index aa3cf3f1..b8f5bf0b 100644
Binary files a/assets/iview.png and b/assets/iview.png differ
diff --git a/src/components/cascader/cascader.vue b/src/components/cascader/cascader.vue
index cfb23b52..c14c86fd 100644
--- a/src/components/cascader/cascader.vue
+++ b/src/components/cascader/cascader.vue
@@ -43,7 +43,10 @@
                 }
             },
             value: {
-                type: Array
+                type: Array,
+                default () {
+                    return []
+                }
             },
             disabled: {
                 type: Boolean,
diff --git a/src/styles/components/cascader.less b/src/styles/components/cascader.less
index c87ebba5..1d04dc0c 100644
--- a/src/styles/components/cascader.less
+++ b/src/styles/components/cascader.less
@@ -31,6 +31,7 @@
     }
 
     .@{select-dropdown-prefix-cls} {
+        width: auto;
         padding: 0;
         white-space: nowrap;
     }
@@ -42,7 +43,7 @@
         min-width: 100px;
         height: 180px;
         margin: 0;
-        padding: 5px 0;
+        padding: 5px 0 !important;
         vertical-align: top;
         list-style: none;
         border-right: 1px solid @border-color-split;
diff --git a/test/routers/cascader.vue b/test/routers/cascader.vue
index 9256f873..e53aa79a 100644
--- a/test/routers/cascader.vue
+++ b/test/routers/cascader.vue
@@ -1,7 +1,7 @@
 <template>
     <div style="margin: 50px;width:300px">
         {{ value | json }}
-        <Cascader size="large" :data="data" :value.sync="value" @on-change="change" trigger="hover" :render-format="format"></Cascader>
+        <Cascader size="large" :data="data" @on-change="change" trigger="hover" :render-format="format"></Cascader>
     </div>
 </template>
 <script>