diff --git a/components/affix/demo/basic.md b/components/affix/demo/basic.md
new file mode 100644
index 000000000..83fdba97c
--- /dev/null
+++ b/components/affix/demo/basic.md
@@ -0,0 +1,23 @@
+<cn>
+#### 基本
+最简单的用法。
+</cn>
+
+<us>
+#### basic
+The simplest usage.
+</us>
+
+```html
+<template>
+  <div>
+    <a-affix>
+      <a-button type="primary">Affix top</a-button>
+    </a-affix>
+    <br />
+    <a-affix :offsetBottom="0">
+      <a-button type="primary">Affix bottom</a-button>
+    </a-affix>
+  </div>
+</template>
+```
diff --git a/components/affix/demo/index.vue b/components/affix/demo/index.vue
new file mode 100644
index 000000000..fede96675
--- /dev/null
+++ b/components/affix/demo/index.vue
@@ -0,0 +1,37 @@
+<script>
+import Basic from './basic'
+import Onchange from './on-change'
+import Target from './target'
+import CN from '../index.zh-CN.md'
+import US from '../index.en-US.md'
+const md = {
+  cn: `# Affix 固钉
+          将页面元素钉在可视范围。
+## 何时使用
+当内容区域比较长，需要滚动页面时，这部分内容对应的操作或者导航需要在滚动范围内始终展现。常用于侧边菜单和按钮组合。
+页面可视范围过小时，慎用此功能以免遮挡页面内容。
+          ## 代码演示`,
+  us: `# Affix
+          Make an element stick to viewport.
+## When To Use
+When user browses a long web page, some content need to stick to the viewport. This is common for menus and actions.
+Please note that Affix should not cover other content on the page, especially when the size of the viewport is small.
+`,
+}
+export default {
+  render () {
+    return (
+      <div>
+        <md cn={md.cn} us={md.us}/>
+        <Basic />
+        <Onchange />
+        <Target />
+        <api>
+          <CN slot='cn' />
+          <US/>
+        </api>
+      </div>
+    )
+  },
+}
+</script>
diff --git a/components/affix/demo/on-change.md b/components/affix/demo/on-change.md
new file mode 100644
index 000000000..f79fb1feb
--- /dev/null
+++ b/components/affix/demo/on-change.md
@@ -0,0 +1,26 @@
+<cn>
+#### 固定状态改变的回调
+可以获得是否固定的状态。
+</cn>
+
+<us>
+#### Callback
+Callback with affixed state.
+</us>
+
+```html
+<template>
+  <a-affix :offsetTop="120" @change="change">
+    <a-button>120px to affix top</a-button>
+  </a-affix>
+</template>
+<script>
+export default {
+  methods: {
+    change(affixed) {
+      console.log(affixed)
+    }
+  }
+}
+</script>
+```
diff --git a/components/affix/demo/target.md b/components/affix/demo/target.md
new file mode 100644
index 000000000..0c071e081
--- /dev/null
+++ b/components/affix/demo/target.md
@@ -0,0 +1,34 @@
+<cn>
+#### 滚动容器
+用 `target` 设置 `Affix` 需要监听其滚动事件的元素，默认为 `window`。
+</cn>
+
+<us>
+#### Container to scroll.
+Set a `target` for 'Affix', which is listen to scroll event of target element (default is `window`).
+</us>
+
+```html
+<template>
+  <div id="components-affix-demo-target" class="scrollable-container" ref="container">
+    <div class="background">
+      <a-affix :target="() => this.$refs.container">
+        <a-button type="primary">
+          Fixed at the top of container
+        </a-button>
+      </a-affix>
+    </div>
+  </div>
+</template>
+<style>
+#components-affix-demo-target.scrollable-container {
+  height: 100px;
+  overflow-y: scroll;
+}
+#components-affix-demo-target .background {
+  padding-top: 60px;
+  height: 300px;
+  background-image: url('https://zos.alipayobjects.com/rmsportal/RmjwQiJorKyobvI.jpg');
+}
+</style>
+```
diff --git a/components/affix/index.en-US.md b/components/affix/index.en-US.md
new file mode 100644
index 000000000..b58ff8bfe
--- /dev/null
+++ b/components/affix/index.en-US.md
@@ -0,0 +1,21 @@
+
+## API
+
+| Property | Description | Type | Default |
+| -------- | ----------- | ---- | ------- |
+| offsetBottom | Pixels to offset from bottom when calculating position of scroll | number | - |
+| offsetTop | Pixels to offset from top when calculating position of scroll | number | 0 |
+| target | specifies the scrollable area dom node | () => HTMLElement | () => window |
+
+### events
+| Events Name | Description | Arguments |
+| --- | --- | --- |
+| onChange | Callback for when affix state is changed | Function(affixed) |
+
+**Note:** Children of `Affix` can not be `position: absolute`, but you can set `Affix` as `position: absolute`:
+
+````html
+<a-affix :style="{ position: 'absolute', top: y, left: x}">
+  ...
+</a-affix>
+````
diff --git a/components/affix/index.vue b/components/affix/index.vue
index a02185f4a..78fd1432b 100644
--- a/components/affix/index.vue
+++ b/components/affix/index.vue
@@ -5,7 +5,8 @@ import classNames from 'classnames'
 import shallowequal from 'shallowequal'
 import omit from 'omit.js'
 import getScroll from '../_util/getScroll'
-import { throttleByAnimationFrameDecorator } from '../_util/throttleByAnimationFrame'
+import BaseMixin from '../_util/BaseMixin'
+import throttleByAnimationFrame from '../_util/throttleByAnimationFrame'
 
 function getTargetRect (target) {
   return target !== window
@@ -55,14 +56,10 @@ const AffixProps = {
   prefixCls: PropTypes.string,
 }
 
-// export interface AffixState {
-//   affixStyle: React.CSSProperties | undefined;
-//   placeholderStyle: React.CSSProperties | undefined;
-// }
-
 export default {
   name: 'Affix',
   props: AffixProps,
+  mixins: [BaseMixin],
   data () {
     this.events = [
       'resize',
@@ -79,6 +76,9 @@ export default {
       placeholderStyle: undefined,
     }
   },
+  beforeMount () {
+    this.updatePosition = throttleByAnimationFrame(this.updatePosition)
+  },
   mounted () {
     const target = this.target || getDefaultTarget
     // Wait for parent component ref has its value
@@ -96,7 +96,6 @@ export default {
       })
     },
   },
-
   beforeDestroy () {
     this.clearEventListeners()
     clearTimeout(this.timeout)
@@ -130,7 +129,6 @@ export default {
       this.setState({ placeholderStyle: placeholderStyle })
     },
 
-    // @throttleByAnimationFrameDecorator()
     updatePosition (e) {
       let { offsetTop } = this
       const { offsetBottom, offset, target = getDefaultTarget } = this
@@ -244,4 +242,4 @@ export default {
   },
 }
 
-</script>
\ No newline at end of file
+</script>
diff --git a/components/affix/index.zh-CN.md b/components/affix/index.zh-CN.md
new file mode 100644
index 000000000..b3160e1b6
--- /dev/null
+++ b/components/affix/index.zh-CN.md
@@ -0,0 +1,23 @@
+
+## API
+
+| 成员 | 说明 | 类型 | 默认值 |
+| --- | --- | --- | --- |
+| offsetBottom | 距离窗口底部达到指定偏移量后触发 | number |  |
+| offsetTop | 距离窗口顶部达到指定偏移量后触发 | number |  |
+| target | 设置 `Affix` 需要监听其滚动事件的元素，值为一个返回对应 DOM 元素的函数 | () => HTMLElement | () => window |
+
+
+### 事件
+| 事件名称 | 说明 | 回调参数 |
+| --- | --- | --- |
+| change | 固定状态改变时触发的回调函数 | Function(affixed) |
+
+
+**注意：**`Affix` 内的元素不要使用绝对定位，如需要绝对定位的效果，可以直接设置 `Affix` 为绝对定位：
+
+````html
+<a-affix :style="{ position: 'absolute', top: y, left: x}">
+  ...
+</a-affix>
+````
diff --git a/components/button/demo/basic.md b/components/button/demo/basic.md
index de0910473..55943099f 100644
--- a/components/button/demo/basic.md
+++ b/components/button/demo/basic.md
@@ -11,7 +11,7 @@ There are `primary` button, `default` button, `dashed` button and `danger` butto
 
 ```html
 <template>
-  <div class='test'>
+  <div>
     <a-button type="primary">Primary</a-button>
     <a-button>Default</a-button>
     <a-button type="dashed">Dashed</a-button>
diff --git a/components/card/Card.vue b/components/card/Card.vue
index bbdc24838..c1081d7ac 100644
--- a/components/card/Card.vue
+++ b/components/card/Card.vue
@@ -1,9 +1,8 @@
 <script>
   import { Tabs } from 'antd'
-  import omit from 'omit.js'
   import PropTypes from '../_util/vue-types'
   import addEventListener from '../_util/Dom/addEventListener'
-  import { hasProp, getComponentFromProp, getComponentName } from '../_util/props-util'
+  import { getComponentFromProp, getComponentName } from '../_util/props-util'
   import throttleByAnimationFrame from '../_util/throttleByAnimationFrame'
   import BaseMixin from '../_util/BaseMixin'
 
@@ -18,32 +17,25 @@
       bordered: PropTypes.bool.def(true),
       bodyStyle: PropTypes.object,
       loading: PropTypes.bool.def(false),
-      noHovering: PropTypes.bool.def(false),
       hoverable: PropTypes.bool.def(false),
       type: PropTypes.string,
       actions: PropTypes.any,
       tabList: PropTypes.array,
     },
     data () {
+      this.updateWiderPaddingCalled = false
       return {
         widerPadding: false,
-        updateWiderPaddingCalled: false,
       }
     },
-    mounted () {
+    beforeMount () {
       this.updateWiderPadding = throttleByAnimationFrame(this.updateWiderPadding)
+    },
+    mounted () {
       this.updateWiderPadding()
       this.resizeEvent = addEventListener(window, 'resize', this.updateWiderPadding)
-
-      // if (hasProp(this, 'noHovering')) {
-      //   warning(
-      //     !this.noHovering,
-      //     '`noHovering` of Card is deperated, you can remove it safely or use `hoverable` instead.',
-      //   )
-      //   warning(!!this.noHovering, '`noHovering={false}` of Card is deperated, use `hoverable` instead.')
-      // }
     },
-    beforeMount () {
+    beforeDestroy () {
       if (this.resizeEvent) {
         this.resizeEvent.remove()
       }
@@ -84,19 +76,11 @@
         })
         return containGrid
       },
-      // For 2.x compatible
-      getCompatibleHoverable () {
-        const { noHovering, hoverable } = this.$props
-        if (hasProp(this, 'noHovering')) {
-          return !noHovering || hoverable
-        }
-        return !!hoverable
-      },
     },
     render () {
       const {
         prefixCls = 'ant-card', extra, bodyStyle, title, loading,
-        bordered = true, type, tabList, ...others
+        bordered = true, type, tabList, hoverable,
       } = this.$props
 
       const { $slots } = this
@@ -105,7 +89,7 @@
         [`${prefixCls}`]: true,
         [`${prefixCls}-loading`]: loading,
         [`${prefixCls}-bordered`]: bordered,
-        [`${prefixCls}-hoverable`]: this.getCompatibleHoverable(),
+        [`${prefixCls}-hoverable`]: !!hoverable,
         [`${prefixCls}-wider-padding`]: this.widerPadding,
         [`${prefixCls}-padding-transition`]: this.updateWiderPaddingCalled,
         [`${prefixCls}-contain-grid`]: this.isContainGrid($slots.default),
@@ -166,11 +150,9 @@
       )
       const actions = getComponentFromProp(this, 'actions')
       const actionDom = actions || null
-      const divProps = omit(others, [
-        'tabChange',
-      ])
+
       return (
-        <div {...divProps} class={classString} ref='cardContainerRef'>
+        <div class={classString} ref='cardContainerRef'>
           {head}
           {coverDom}
           {children ? body : null}
diff --git a/components/index.js b/components/index.js
index 93f7a1777..e39622cde 100644
--- a/components/index.js
+++ b/components/index.js
@@ -89,3 +89,5 @@ export { default as LocaleProvider } from './locale-provider'
 
 export { default as AutoComplete } from './auto-complete'
 
+export { default as Affix } from './affix'
+
diff --git a/components/style.js b/components/style.js
index bc5a36882..c2076c700 100644
--- a/components/style.js
+++ b/components/style.js
@@ -24,3 +24,4 @@ import './spin/style'
 import './select/style'
 import './switch/style'
 import './auto-complete/style'
+import './affix/style'
diff --git a/components/vc-cascader/Cascader.vue b/components/vc-cascader/Cascader.vue
new file mode 100644
index 000000000..92194ef90
--- /dev/null
+++ b/components/vc-cascader/Cascader.vue
@@ -0,0 +1,313 @@
+<script>
+import React, { Component, cloneElement } from 'react';
+import PropTypes from 'prop-types';
+import Trigger from 'rc-trigger';
+import Menus from './Menus';
+import KeyCode from 'rc-util/lib/KeyCode';
+import arrayTreeFilter from 'array-tree-filter';
+import shallowEqualArrays from 'shallow-equal/arrays';
+
+const BUILT_IN_PLACEMENTS = {
+  bottomLeft: {
+    points: ['tl', 'bl'],
+    offset: [0, 4],
+    overflow: {
+      adjustX: 1,
+      adjustY: 1,
+    },
+  },
+  topLeft: {
+    points: ['bl', 'tl'],
+    offset: [0, -4],
+    overflow: {
+      adjustX: 1,
+      adjustY: 1,
+    },
+  },
+  bottomRight: {
+    points: ['tr', 'br'],
+    offset: [0, 4],
+    overflow: {
+      adjustX: 1,
+      adjustY: 1,
+    },
+  },
+  topRight: {
+    points: ['br', 'tr'],
+    offset: [0, -4],
+    overflow: {
+      adjustX: 1,
+      adjustY: 1,
+    },
+  },
+};
+
+class Cascader extends Component {
+  constructor(props) {
+    super(props);
+    let initialValue = [];
+    if ('value' in props) {
+      initialValue = props.value || [];
+    } else if ('defaultValue' in props) {
+      initialValue = props.defaultValue || [];
+    }
+
+    this.state = {
+      popupVisible: props.popupVisible,
+      activeValue: initialValue,
+      value: initialValue,
+    };
+  }
+  componentWillReceiveProps(nextProps) {
+    if ('value' in nextProps && !shallowEqualArrays(this.props.value, nextProps.value)) {
+      const newValues = {
+        value: nextProps.value || [],
+        activeValue: nextProps.value || [],
+      };
+      // allow activeValue diff from value
+      // https://github.com/ant-design/ant-design/issues/2767
+      if ('loadData' in nextProps) {
+        delete newValues.activeValue;
+      }
+      this.setState(newValues);
+    }
+    if ('popupVisible' in nextProps) {
+      this.setState({
+        popupVisible: nextProps.popupVisible,
+      });
+    }
+  }
+  getPopupDOMNode() {
+    return this.trigger.getPopupDomNode();
+  }
+  getCurrentLevelOptions() {
+    const { options } = this.props;
+    const { activeValue = [] } = this.state;
+    const result = arrayTreeFilter(options, (o, level) => o.value === activeValue[level]);
+    if (result[result.length - 2]) {
+      return result[result.length - 2].children;
+    }
+    return [...options].filter(o => !o.disabled);
+  }
+  getActiveOptions(activeValue) {
+    return arrayTreeFilter(this.props.options, (o, level) => o.value === activeValue[level]);
+  }
+  setPopupVisible = (popupVisible) => {
+    if (!('popupVisible' in this.props)) {
+      this.setState({ popupVisible });
+    }
+    // sync activeValue with value when panel open
+    if (popupVisible && !this.state.visible) {
+      this.setState({
+        activeValue: this.state.value,
+      });
+    }
+    this.props.onPopupVisibleChange(popupVisible);
+  }
+  handleChange = (options, setProps, e) => {
+    if (e.type !== 'keydown' || e.keyCode === KeyCode.ENTER) {
+      this.props.onChange(options.map(o => o.value), options);
+      this.setPopupVisible(setProps.visible);
+    }
+  }
+  handlePopupVisibleChange = (popupVisible) => {
+    this.setPopupVisible(popupVisible);
+  }
+  handleMenuSelect = (targetOption, menuIndex, e) => {
+    // Keep focused state for keyboard support
+    const triggerNode = this.trigger.getRootDomNode();
+    if (triggerNode && triggerNode.focus) {
+      triggerNode.focus();
+    }
+    const { changeOnSelect, loadData, expandTrigger } = this.props;
+    if (!targetOption || targetOption.disabled) {
+      return;
+    }
+    let { activeValue } = this.state;
+    activeValue = activeValue.slice(0, menuIndex + 1);
+    activeValue[menuIndex] = targetOption.value;
+    const activeOptions = this.getActiveOptions(activeValue);
+    if (targetOption.isLeaf === false && !targetOption.children && loadData) {
+      if (changeOnSelect) {
+        this.handleChange(activeOptions, { visible: true }, e);
+      }
+      this.setState({ activeValue });
+      loadData(activeOptions);
+      return;
+    }
+    const newState = {};
+    if (!targetOption.children || !targetOption.children.length) {
+      this.handleChange(activeOptions, { visible: false }, e);
+      // set value to activeValue when select leaf option
+      newState.value = activeValue;
+      // add e.type judgement to prevent `onChange` being triggered by mouseEnter
+    } else if (changeOnSelect && (e.type === 'click' || e.type === 'keydown')) {
+      if (expandTrigger === 'hover') {
+        this.handleChange(activeOptions, { visible: false }, e);
+      } else {
+        this.handleChange(activeOptions, { visible: true }, e);
+      }
+      // set value to activeValue on every select
+      newState.value = activeValue;
+    }
+    newState.activeValue = activeValue;
+    //  not change the value by keyboard
+    if ('value' in this.props ||
+        (e.type === 'keydown' && e.keyCode !== KeyCode.ENTER)) {
+      delete newState.value;
+    }
+    this.setState(newState);
+  }
+  handleKeyDown = (e) => {
+    const { children } = this.props;
+    // https://github.com/ant-design/ant-design/issues/6717
+    // Don't bind keyboard support when children specify the onKeyDown
+    if (children && children.props.onKeyDown) {
+      children.props.onKeyDown(e);
+      return;
+    }
+    const activeValue = [...this.state.activeValue];
+    const currentLevel = activeValue.length - 1 < 0 ? 0 : activeValue.length - 1;
+    const currentOptions = this.getCurrentLevelOptions();
+    const currentIndex = currentOptions.map(o => o.value).indexOf(activeValue[currentLevel]);
+    if (e.keyCode !== KeyCode.DOWN &&
+        e.keyCode !== KeyCode.UP &&
+        e.keyCode !== KeyCode.LEFT &&
+        e.keyCode !== KeyCode.RIGHT &&
+        e.keyCode !== KeyCode.ENTER &&
+        e.keyCode !== KeyCode.BACKSPACE &&
+        e.keyCode !== KeyCode.ESC) {
+      return;
+    }
+    // Press any keys above to reopen menu
+    if (!this.state.popupVisible &&
+        e.keyCode !== KeyCode.BACKSPACE &&
+        e.keyCode !== KeyCode.LEFT &&
+        e.keyCode !== KeyCode.RIGHT &&
+        e.keyCode !== KeyCode.ESC) {
+      this.setPopupVisible(true);
+      return;
+    }
+    if (e.keyCode === KeyCode.DOWN || e.keyCode === KeyCode.UP) {
+      let nextIndex = currentIndex;
+      if (nextIndex !== -1) {
+        if (e.keyCode === KeyCode.DOWN) {
+          nextIndex += 1;
+          nextIndex = nextIndex >= currentOptions.length ? 0 : nextIndex;
+        } else {
+          nextIndex -= 1;
+          nextIndex = nextIndex < 0 ? currentOptions.length - 1 : nextIndex;
+        }
+      } else {
+        nextIndex = 0;
+      }
+      activeValue[currentLevel] = currentOptions[nextIndex].value;
+    } else if (e.keyCode === KeyCode.LEFT || e.keyCode === KeyCode.BACKSPACE) {
+      activeValue.splice(activeValue.length - 1, 1);
+    } else if (e.keyCode === KeyCode.RIGHT) {
+      if (currentOptions[currentIndex] && currentOptions[currentIndex].children) {
+        activeValue.push(currentOptions[currentIndex].children[0].value);
+      }
+    } else if (e.keyCode === KeyCode.ESC) {
+      this.setPopupVisible(false);
+      return;
+    }
+    if (!activeValue || activeValue.length === 0) {
+      this.setPopupVisible(false);
+    }
+    const activeOptions = this.getActiveOptions(activeValue);
+    const targetOption = activeOptions[activeOptions.length - 1];
+    this.handleMenuSelect(targetOption, activeOptions.length - 1, e);
+
+    if (this.props.onKeyDown) {
+      this.props.onKeyDown(e);
+    }
+  }
+
+  saveTrigger = (node) => {
+    this.trigger = node;
+  }
+
+  render() {
+    const {
+      prefixCls, transitionName, popupClassName, options, disabled,
+      builtinPlacements, popupPlacement, children, ...restProps,
+    } = this.props;
+    // Did not show popup when there is no options
+    let menus = <div />;
+    let emptyMenuClassName = '';
+    if (options && options.length > 0) {
+      menus = (
+        <Menus
+          {...this.props}
+          value={this.state.value}
+          activeValue={this.state.activeValue}
+          onSelect={this.handleMenuSelect}
+          visible={this.state.popupVisible}
+        />
+      );
+    } else {
+      emptyMenuClassName = ` ${prefixCls}-menus-empty`;
+    }
+    return (
+      <Trigger
+        ref={this.saveTrigger}
+        {...restProps}
+        options={options}
+        disabled={disabled}
+        popupPlacement={popupPlacement}
+        builtinPlacements={builtinPlacements}
+        popupTransitionName={transitionName}
+        action={disabled ? [] : ['click']}
+        popupVisible={disabled ? false : this.state.popupVisible}
+        onPopupVisibleChange={this.handlePopupVisibleChange}
+        prefixCls={`${prefixCls}-menus`}
+        popupClassName={popupClassName + emptyMenuClassName}
+        popup={menus}
+      >
+        {cloneElement(children, {
+          onKeyDown: this.handleKeyDown,
+          tabIndex: disabled ? undefined : 0,
+        })}
+      </Trigger>
+    );
+  }
+}
+
+Cascader.defaultProps = {
+  options: [],
+  onChange() {},
+  onPopupVisibleChange() {},
+  disabled: false,
+  transitionName: '',
+  prefixCls: 'rc-cascader',
+  popupClassName: '',
+  popupPlacement: 'bottomLeft',
+  builtinPlacements: BUILT_IN_PLACEMENTS,
+  expandTrigger: 'click',
+};
+
+Cascader.propTypes = {
+  value: PropTypes.array,
+  defaultValue: PropTypes.array,
+  options: PropTypes.array.isRequired,
+  onChange: PropTypes.func,
+  onPopupVisibleChange: PropTypes.func,
+  popupVisible: PropTypes.bool,
+  disabled: PropTypes.bool,
+  transitionName: PropTypes.string,
+  popupClassName: PropTypes.string,
+  popupPlacement: PropTypes.string,
+  prefixCls: PropTypes.string,
+  dropdownMenuColumnStyle: PropTypes.object,
+  builtinPlacements: PropTypes.object,
+  loadData: PropTypes.func,
+  changeOnSelect: PropTypes.bool,
+  children: PropTypes.node,
+  onKeyDown: PropTypes.func,
+  expandTrigger: PropTypes.string,
+};
+
+export default Cascader;
+
+</script>
diff --git a/components/vc-cascader/Menus.vue b/components/vc-cascader/Menus.vue
new file mode 100644
index 000000000..53b6e200d
--- /dev/null
+++ b/components/vc-cascader/Menus.vue
@@ -0,0 +1,156 @@
+<script>
+import React from 'react'
+import PropTypes from 'prop-types'
+import arrayTreeFilter from 'array-tree-filter'
+import { findDOMNode } from 'react-dom'
+
+class Menus extends React.Component {
+  constructor (props) {
+    super(props)
+
+    this.menuItems = {}
+  }
+
+  componentDidMount () {
+    this.scrollActiveItemToView()
+  }
+
+  componentDidUpdate (prevProps) {
+    if (!prevProps.visible && this.props.visible) {
+      this.scrollActiveItemToView()
+    }
+  }
+
+  getOption (option, menuIndex) {
+    const { prefixCls, expandTrigger } = this.props
+    const onSelect = this.props.onSelect.bind(this, option, menuIndex)
+    let expandProps = {
+      onClick: onSelect,
+    }
+    let menuItemCls = `${prefixCls}-menu-item`
+    const hasChildren = option.children && option.children.length > 0
+    if (hasChildren || option.isLeaf === false) {
+      menuItemCls += ` ${prefixCls}-menu-item-expand`
+    }
+    if (expandTrigger === 'hover' && hasChildren) {
+      expandProps = {
+        onMouseEnter: this.delayOnSelect.bind(this, onSelect),
+        onMouseLeave: this.delayOnSelect.bind(this),
+        onClick: onSelect,
+      }
+    }
+    if (this.isActiveOption(option, menuIndex)) {
+      menuItemCls += ` ${prefixCls}-menu-item-active`
+      expandProps.ref = this.saveMenuItem(menuIndex)
+    }
+    if (option.disabled) {
+      menuItemCls += ` ${prefixCls}-menu-item-disabled`
+    }
+    if (option.loading) {
+      menuItemCls += ` ${prefixCls}-menu-item-loading`
+    }
+    let title = ''
+    if (option.title) {
+      title = option.title
+    } else if (typeof option.label === 'string') {
+      title = option.label
+    }
+    return (
+      <li
+        key={option.value}
+        className={menuItemCls}
+        title={title}
+        {...expandProps}
+      >
+        {option.label}
+      </li>
+    )
+  }
+
+  getActiveOptions (values) {
+    const activeValue = values || this.props.activeValue
+    const options = this.props.options
+    return arrayTreeFilter(options, (o, level) => o.value === activeValue[level])
+  }
+
+  getShowOptions () {
+    const { options } = this.props
+    const result = this.getActiveOptions()
+      .map(activeOption => activeOption.children)
+      .filter(activeOption => !!activeOption)
+    result.unshift(options)
+    return result
+  }
+
+  delayOnSelect (onSelect, ...args) {
+    if (this.delayTimer) {
+      clearTimeout(this.delayTimer)
+      this.delayTimer = null
+    }
+    if (typeof onSelect === 'function') {
+      this.delayTimer = setTimeout(() => {
+        onSelect(args)
+        this.delayTimer = null
+      }, 150)
+    }
+  }
+
+  scrollActiveItemToView () {
+    // scroll into view
+    const optionsLength = this.getShowOptions().length
+    for (let i = 0; i < optionsLength; i++) {
+      const itemComponent = this.menuItems[i]
+      if (itemComponent) {
+        const target = findDOMNode(itemComponent)
+        target.parentNode.scrollTop = target.offsetTop
+      }
+    }
+  }
+
+  isActiveOption (option, menuIndex) {
+    const { activeValue = [] } = this.props
+    return activeValue[menuIndex] === option.value
+  }
+
+  saveMenuItem = (index) => (node) => {
+    this.menuItems[index] = node
+  }
+
+  render () {
+    const { prefixCls, dropdownMenuColumnStyle } = this.props
+    return (
+      <div>
+        {this.getShowOptions().map((options, menuIndex) =>
+          <ul className={`${prefixCls}-menu`} key={menuIndex} style={dropdownMenuColumnStyle}>
+            {options.map(option => this.getOption(option, menuIndex))}
+          </ul>
+        )}
+      </div>
+    )
+  }
+}
+
+Menus.defaultProps = {
+  options: [],
+  value: [],
+  activeValue: [],
+  onSelect () {},
+  prefixCls: 'rc-cascader-menus',
+  visible: false,
+  expandTrigger: 'click',
+}
+
+Menus.propTypes = {
+  value: PropTypes.array,
+  activeValue: PropTypes.array,
+  options: PropTypes.array.isRequired,
+  prefixCls: PropTypes.string,
+  expandTrigger: PropTypes.string,
+  onSelect: PropTypes.func,
+  visible: PropTypes.bool,
+  dropdownMenuColumnStyle: PropTypes.object,
+}
+
+export default Menus
+
+</script>
diff --git a/components/vc-cascader/assets/index.less b/components/vc-cascader/assets/index.less
new file mode 100644
index 000000000..c2a2e3b3c
--- /dev/null
+++ b/components/vc-cascader/assets/index.less
@@ -0,0 +1,167 @@
+.effect() {
+  animation-duration: .3s;
+  animation-fill-mode: both;
+  transform-origin: 0 0;
+}
+
+.rc-cascader {
+  font-size: 12px;
+  &-menus {
+    font-size: 12px;
+    overflow: hidden;
+    background: #fff;
+    position: absolute;
+    border: 1px solid #d9d9d9;
+    border-radius: 6px;
+    box-shadow: 0 0 4px rgba(0,0,0,0.17);
+    white-space: nowrap;
+
+    &-hidden {
+      display: none;
+    }
+
+    &.slide-up-enter, &.slide-up-appear {
+      .effect();
+      opacity: 0;
+      animation-timing-function: cubic-bezier(0.08, 0.82, 0.17, 1);
+      animation-play-state: paused;
+    }
+
+    &.slide-up-leave {
+      .effect();
+      opacity: 1;
+      animation-timing-function: cubic-bezier(0.6, 0.04, 0.98, 0.34);
+      animation-play-state: paused;
+    }
+
+    &.slide-up-enter.slide-up-enter-active&-placement-bottomLeft,
+    &.slide-up-appear.slide-up-appear-active&-placement-bottomLeft {
+      animation-name: SlideUpIn;
+      animation-play-state: running;
+    }
+
+    &.slide-up-enter.slide-up-enter-active&-placement-topLeft,
+    &.slide-up-appear.slide-up-appear-active&-placement-topLeft {
+      animation-name: SlideDownIn;
+      animation-play-state: running;
+    }
+
+    &.slide-up-leave.slide-up-leave-active&-placement-bottomLeft {
+      animation-name: SlideUpOut;
+      animation-play-state: running;
+    }
+
+    &.slide-up-leave.slide-up-leave-active&-placement-topLeft {
+      animation-name: SlideDownOut;
+      animation-play-state: running;
+    }
+  }
+  &-menu {
+    display: inline-block;
+    width: 100px;
+    height: 192px;
+    list-style: none;
+    margin: 0;
+    padding: 0;
+    border-right: 1px solid #e9e9e9;
+    overflow: auto;
+    &:last-child {
+      border-right: 0;
+    }
+  }
+  &-menu-item {
+    height: 32px;
+    line-height: 32px;
+    padding: 0 16px;
+    cursor: pointer;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    transition: all 0.3s ease;
+    position: relative;
+    &:hover {
+      background: tint(#2db7f5, 90%);
+    }
+    &-disabled {
+      cursor: not-allowed;
+      color: #ccc;
+      &:hover {
+        background: transparent;
+      }
+    }
+    &-loading:after {
+      position: absolute;
+      right: 12px;
+      content: 'loading';
+      color: #aaa;
+      font-style: italic;
+    }
+    &-active {
+      background: tint(#2db7f5, 80%);
+      &:hover {
+        background: tint(#2db7f5, 80%);
+      }
+    }
+    &-expand {
+      position: relative;
+      &:after {
+        content: '>';
+        font-size: 12px;
+        color: #999;
+        position: absolute;
+        right: 16px;
+        line-height: 32px;
+      }
+    }
+  }
+}
+
+@keyframes SlideUpIn {
+  0% {
+    opacity: 0;
+    transform-origin: 0% 0%;
+    transform: scaleY(.8);
+  }
+  100% {
+    opacity: 1;
+    transform-origin: 0% 0%;
+    transform: scaleY(1);
+  }
+}
+@keyframes SlideUpOut {
+  0% {
+    opacity: 1;
+    transform-origin: 0% 0%;
+    transform: scaleY(1);
+  }
+  100% {
+    opacity: 0;
+    transform-origin: 0% 0%;
+    transform: scaleY(0.8);
+  }
+}
+
+@keyframes SlideDownIn {
+  0% {
+    opacity: 0;
+    transform-origin: 0% 100%;
+    transform: scaleY(0.8);
+  }
+  100% {
+    opacity: 1;
+    transform-origin: 0% 100%;
+    transform: scaleY(1);
+  }
+}
+@keyframes SlideDownOut {
+  0% {
+    opacity: 1;
+    transform-origin: 0% 100%;
+    transform: scaleY(1);
+  }
+  100% {
+    opacity: 0;
+    transform-origin: 0% 100%;
+    transform: scaleY(0.8);
+  }
+}
diff --git a/components/vc-cascader/index.js b/components/vc-cascader/index.js
new file mode 100644
index 000000000..f68442fea
--- /dev/null
+++ b/components/vc-cascader/index.js
@@ -0,0 +1,3 @@
+// export this package's api
+import Cascader from './Cascader'
+export default Cascader
diff --git a/components/vc-switch/Switch.vue b/components/vc-switch/Switch.vue
index dab42e7f4..a4f0ea373 100644
--- a/components/vc-switch/Switch.vue
+++ b/components/vc-switch/Switch.vue
@@ -15,9 +15,6 @@ export default {
   props: {
     ...switchPropTypes,
     prefixCls: switchPropTypes.prefixCls.def('rc-switch'),
-    checkedChildren: switchPropTypes.checkedChildren,
-    unCheckedChildren: switchPropTypes.unCheckedChildren,
-    defaultChecked: switchPropTypes.defaultChecked.def(''),
     // onChange: switchPropTypes.onChange.def(noop),
     // onClick: switchPropTypes.onClick.def(noop),
   },
diff --git a/contributors.md b/contributors.md
index 1c22363aa..71dbb0380 100644
--- a/contributors.md
+++ b/contributors.md
@@ -19,6 +19,8 @@ Select | done
 Input | done
 InputNumber
 AutoComplete | done
+Affix | done
+Cascader
 Modal
 Alert
 Calendar
@@ -32,7 +34,6 @@ Mention
 ##万
 Grid
 Col
-Affix
 BackTop
 Layout
 Anchor
diff --git a/examples/demo.js b/examples/demo.js
index 64b03cb57..00f3ce5e2 100644
--- a/examples/demo.js
+++ b/examples/demo.js
@@ -25,4 +25,5 @@ export { default as message } from 'antd/message/demo/index.vue'
 export { default as spin } from 'antd/spin/demo/index.vue'
 export { default as switch } from 'antd/switch/demo/index.vue'
 export { default as autoComplete } from 'antd/auto-complete/demo/index.vue'
+export { default as affix } from 'antd/Affix/demo/index.vue'
 
diff --git a/examples/routes.js b/examples/routes.js
index e9d28cb55..1e76bdeae 100644
--- a/examples/routes.js
+++ b/examples/routes.js
@@ -3,7 +3,7 @@ const AsyncComp = () => {
   const hashs = window.location.hash.split('/')
   const d = hashs[hashs.length - 1]
   return {
-    component: import(`../components/auto-complete/demo/${d}`),
+    component: import(`../components/affix/demo/${d}`),
   }
 }
 export default [
diff --git a/package.json b/package.json
index e327fb284..b0a193a8e 100644
--- a/package.json
+++ b/package.json
@@ -100,6 +100,7 @@
     "lodash.isplainobject": "^4.0.6",
     "moment": "^2.20.1",
     "omit.js": "^1.0.0",
+    "shallowequal": "^1.0.2",
     "vue": "^2.5.13",
     "vue-clipboard2": "0.0.8",
     "vue-types": "^1.0.2",