diff --git a/examples/simple.js b/examples/simple.js
index 8893e40..5f57cca 100644
--- a/examples/simple.js
+++ b/examples/simple.js
@@ -4,6 +4,7 @@ require('rc-slider/assets/index.less');
 
 var React = require('react');
 var Slider = require('rc-slider');
+var style = {width:400,margin:100};
 
 function onChange(v) {
   console.log(v);
@@ -11,23 +12,35 @@ function onChange(v) {
 
 React.render(
   <div>
-    <div style={{width:400,margin:100}}>
-      <Slider onChange={onChange} tipTransitionName='rc-slider-tooltip-zoom-down'/>
+    <div style={style}>
+      <Slider onChange={onChange} tipTransitionName='rc-slider-tooltip-zoom-down' />
     </div>
-    <div style={{width:400,margin:100}}>
-      <Slider marks={["一","二","三","四","五"]} defaultIndex={2}/>
+    <div style={style}>
+      <Slider marks={["一","二","三","四","五"]} defaultIndex={2} />
     </div>
-    <div style={{width:400,margin:100}}>
-      <Slider withDots step={20}/>
+    <div style={style}>
+      <Slider withDots step={20} />
     </div>
-    <div style={{width:400,margin:100}}>
-      <Slider step={20}/>
+    <div style={style}>
+      <Slider step={20} />
     </div>
-    <div style={{width:400,margin:100}}>
+    <div style={style}>
+      <Slider range={true} min={10} max={90} values={[0, 30]} onChange={onChange} />
+    </div>
+    <div style={style}>
+      <Slider range={true} withDots step={20} values={[0, 30]} onChange={onChange} isIncluded={false} />
+    </div>
+    <div style={style}>
+      <Slider range={true} withDots step={20} values={[0, 0]} onChange={onChange} isIncluded={false} />
+    </div>
+    <div style={style}>
+      <Slider range={true} withDots step={20} values={[100, 100]} onChange={onChange} isIncluded={false} />
+    </div>
+    <div style={style}>
       <p>包含关系</p>
       <Slider marks={["状态1","状态2","状态3","状态4"]} defaultIndex={1} />
     </div>
-    <div style={{width:400,margin:100}}>
+    <div style={style}>
       <p>并列关系</p>
       <Slider marks={["状态1","状态2","状态3","状态4"]} isIncluded={false} defaultIndex={1} />
     </div>
diff --git a/src/Handle.jsx b/src/Handle.jsx
index d355c92..3869059 100644
--- a/src/Handle.jsx
+++ b/src/Handle.jsx
@@ -10,6 +10,18 @@ export default class Handle extends React.Component {
     };
   }
 
+  showTooltip() {
+    this.setState({
+      isTooltipVisible: true,
+    });
+  }
+
+  hideTooltip() {
+    this.setState({
+      isTooltipVisible: false,
+    });
+  }
+
   render() {
     const props = this.props;
     const {className, tipTransitionName, offset, value} = props;
@@ -36,17 +48,6 @@ export default class Handle extends React.Component {
               {handle}
             </Tooltip>);
   }
-
-  showTooltip() {
-    this.setState({
-      isTooltipVisible: true,
-    });
-  }
-  hideTooltip() {
-    this.setState({
-      isTooltipVisible: false,
-    });
-  }
 }
 
 Handle.propTypes = {
diff --git a/src/Slider.jsx b/src/Slider.jsx
index 1555004..9ea885e 100644
--- a/src/Slider.jsx
+++ b/src/Slider.jsx
@@ -30,46 +30,62 @@ function pauseEvent(e) {
   }
 }
 
-function getValueFromIndex(props) {
-  const marksLen = props.marks.length;
-  const index = ('index' in props ? props.index : props.defaultIndex);
-
-  let value;
-  if (marksLen > 0) {
-    value = ((props.max - props.min) / (marksLen - 1)) * (index);
-    value = value.toFixed(5);
-  }
-  return value;
-}
-
 class Slider extends React.Component {
   constructor(props) {
     super(props);
 
-    // Note: Maybe `value` is `0`, `false` and so on.
-    //       So, check the existence of `value` with `in`.
-    let value = ('value' in props ? props.value : props.defaultValue);
-    value = this._trimAlignValue(value);
+    let upperBound;
+    let lowerBound;
+    if (props.range) {
+      const values = (props.values || props.defaultValues);
+      upperBound = this.trimAlignValue(values[1]);
+      lowerBound = this.trimAlignValue(values[0]);
+    } else if (props.marks.length > 0) {
+      upperBound = this.calcValueFromProps(props);
+    } else {
+      // Note: Maybe `value` is `0`.
+      //       So, check the existence of `value` with `in`.
+      const value = ('value' in props ? props.value : props.defaultValue);
+      upperBound = this.trimAlignValue(value);
+    }
 
-    const marksLen = props.marks.length;
-    if (marksLen > 0) {
-      value = getValueFromIndex(props);
+    let recent;
+    if (props.range && upperBound === lowerBound) {
+      if (lowerBound === props.max) {
+        recent = 'lowerBound';
+      }
+      if (upperBound === props.min) {
+        recent = 'upperBound';
+      }
+    } else {
+      recent = 'upperBound';
     }
 
     this.state = {
-      dragging: false,
-      value: value,
+      handle: null,
+      recent: recent,
+      upperBound: upperBound,
+      // If Slider is not range, set `lowerBound` equal to `min`.
+      lowerBound: (lowerBound || props.min),
     };
   }
 
   componentWillReceiveProps(nextProps) {
-    if ('value' in nextProps) {
+    if (nextProps.range) {
+      const values = nextProps.values;
+      if (values) {
+        this.setState({
+          upperBound: values[1],
+          lowerBound: values[0],
+        });
+      }
+    } else if ('value' in nextProps) {
       this.setState({
-        value: nextProps.value,
+        upperBound: nextProps.value,
       });
     } else if ('index' in nextProps) {
       this.setState({
-        value: getValueFromIndex(nextProps),
+        upperBound: this.calcValueFromProps(nextProps),
       });
     }
   }
@@ -94,19 +110,24 @@ class Slider extends React.Component {
     const props = this.props;
     const state = this.state;
 
-    let value = state.value;
-    const oldValue = value;
-
     const diffPosition = position - this.startPosition;
-
     const diffValue = diffPosition / this.getSliderLength() * (props.max - props.min);
-    value = this._trimAlignValue(this.startValue + diffValue);
 
-    if (value !== oldValue && !('value' in props) && !('index' in props)) {
-      this.setState({value: value});
+    const value = this.trimAlignValue(this.startValue + diffValue);
+    const oldValue = state[state.handle];
+    if (value === oldValue) return;
+
+    if (!('value' in props) && !('index' in props)) {
+      this.setState({[state.handle]: value});
     }
-    if (value !== oldValue) {
-      this._triggerEvents('onChange', value);
+
+    if (props.range) {
+      // `this.state` will not be updated immediately after `this.setState`.
+      // So, create a similar object.
+      const data = Object.assign({}, state, {[state.handle]: value});
+      this.triggerEvents('onChange', [data.lowerBound, data.upperBound]);
+    } else {
+      this.triggerEvents('onChange', value);
     }
   }
 
@@ -114,30 +135,52 @@ class Slider extends React.Component {
     if (isNotTouchEvent(e)) return;
 
     const position = getTouchPosition(e);
-    const value = this._calValueByPos(position);
-    this._triggerEvents('onChange', value);
-    this._start(position, value);
-    this._addDocumentEvents('touch');
+    this.onStart(position);
+    this.addDocumentEvents('touch');
     pauseEvent(e);
   }
 
   onSliderMouseDown(e) {
     const position = getMousePosition(e);
-    const value = this._calValueByPos(position);
-    this._triggerEvents('onChange', value);
-    this._start(position, value);
-    this._addDocumentEvents('mouse');
+    this.onStart(position);
+    this.addDocumentEvents('mouse');
     pauseEvent(e);
   }
 
-  getIndex(v) {
-    const props = this.props;
-    const value = v === undefined ? this.state.value : v;
+  onStart(position) {
+    this.triggerEvents('onBeforeChange');
 
-    if (props.marks.length === 0) {
-      return Math.floor((value - props.min) / props.step);
+    const value = this.calcValueByPos(position);
+    this.startValue = value;
+    this.startPosition = position;
+
+    const {upperBound, lowerBound} = this.state;
+    const isUpperBoundCloser = Math.abs(upperBound - value) < Math.abs(lowerBound - value);
+    let valueNeedChanging = (!this.props.range || isUpperBoundCloser) ? 'upperBound' : 'lowerBound';
+    const isAtTheSamePoint = (upperBound === lowerBound);
+    valueNeedChanging = isAtTheSamePoint ? this.state.recent : valueNeedChanging;
+
+    this.setState({
+      handle: valueNeedChanging,
+      recent: valueNeedChanging,
+      [valueNeedChanging]: value,
+    });
+
+    if (this.props.range) {
+      const data = Object.assign({}, this.state, {[valueNeedChanging]: value});
+      this.triggerEvents('onChange', [data.lowerBound, data.upperBound]);
+    } else {
+      this.triggerEvents('onChange', value);
     }
-    const unit = ((props.max - props.min) / (props.marks.length - 1)).toFixed(5);
+  }
+
+  getIndex(value) {
+    const {marks, min, max, step} = this.props;
+
+    if (marks.length === 0) {
+      return Math.floor((value - min) / step);
+    }
+    const unit = ((max - min) / (marks.length - 1)).toFixed(5);
     return Math.round(value / unit);
   }
 
@@ -157,71 +200,25 @@ class Slider extends React.Component {
     return rect.left;
   }
 
-  render() {
-    const state = this.state;
-    const {value, dragging} = state;
+  trimAlignValue(v) {
+    const state = this.state || {};
     const props = this.props;
-    const {className, prefixCls, disabled, isIncluded, withDots} = props;
-    const {marks, step, max, min, tipTransitionName, children} = props;
-    const marksLen = marks.length;
-
-    const sliderClassName = rcUtil.classSet({
-      [prefixCls]: true,
-      [prefixCls + '-disabled']: disabled,
-      [className]: !!className,
-    });
-
-    const offset = this._calcOffset(value);
-
-    let track = null;
-    if (isIncluded) {
-      const trackClassName = prefixCls + '-track';
-      track = <Track className={trackClassName} offset={0} length={offset - 0} />;
-    }
-
-    const handleClassName = prefixCls + '-handle';
-
-    let steps = null;
-    if (marksLen > 0 || (step > 1 && withDots)) {
-      const stepsClassName = prefixCls + '-step';
-      const stepNum = marksLen > 0 ? marksLen : Math.floor((max - min) / step) + 1;
-      steps = (<Steps className={stepsClassName} stepNum={stepNum}
-                 index={this.getIndex()} isIncluded={isIncluded} />);
-    }
-
-    let mark = null;
-    if (marksLen > 0) {
-      const markClassName = prefixCls + '-mark';
-      mark = (<Marks className={markClassName} marks={marks}
-                 index={this.getIndex()} isIncluded={isIncluded} />);
-    }
-
-    return (
-      <div ref="slider" className={sliderClassName}
-        onTouchStart={disabled ? noop : this.onTouchStart.bind(this)}
-        onMouseDown={disabled ? noop : this.onSliderMouseDown.bind(this)}>
-        {track}
-        <Handle className={handleClassName} tipTransitionName={tipTransitionName}
-          offset={offset} value={value} dragging={dragging} noTip={marksLen > 0} />
-        {steps}
-        {mark}
-        {children}
-      </div>
-    );
-  }
-
-  _trimAlignValue(v, propsArg) {
-    let val = v;
-    const props = propsArg || this.props;
     const {marks, min, max} = props;
     const step = marks.length > 0 ? (max - min) / (marks.length - 1) : props.step;
 
+    let val = v;
     if (val <= min) {
       val = min;
     }
     if (val >= max) {
       val = max;
     }
+    if (state.handle === 'upperBound' && val <= state.lowerBound) {
+      val = state.lowerBound;
+    }
+    if (state.handle === 'lowerBound' && val >= state.upperBound) {
+      val = state.upperBound;
+    }
 
     const valModStep = (val - min) % step;
     let alignValue = val - valModStep;
@@ -233,28 +230,36 @@ class Slider extends React.Component {
     return parseFloat(alignValue.toFixed(5));
   }
 
-  _calcOffset(value) {
+  calcOffset(value) {
     const {min, max} = this.props;
     const ratio = (value - min) / (max - min);
     return ratio * 100;
   }
 
-  _calcValue(offset) {
+  calcValue(offset) {
     const {min, max} = this.props;
     const ratio = offset / this.getSliderLength();
     return ratio * (max - min) + min;
   }
 
-  _calValueByPos(position) {
+  calcValueByPos(position) {
     const pixelOffset = position - this.getSliderStart();
-    const nextValue = this._trimAlignValue(this._calcValue(pixelOffset));
-    this.setState({
-      value: nextValue,
-    });
+    const nextValue = this.trimAlignValue(this.calcValue(pixelOffset));
     return nextValue;
   }
 
-  _triggerEvents(event, v) {
+  calcValueFromProps(props) {
+    const marksLen = props.marks.length;
+    if (marksLen > 0) {
+      const index = ('index' in props ? props.index : props.defaultIndex);
+      const value = ((props.max - props.min) / (marksLen - 1)) * (index);
+      // `'1' / 1 => 1`, to make sure that the returned value is a `Number`.
+      return value.toFixed(5) / 1;
+    }
+    return ('value' in props ? props.value : props.defaultValue);
+  }
+
+  triggerEvents(event, v) {
     const props = this.props;
     const hasMarks = (props.marks.length > 0);
     if (props[event]) {
@@ -270,7 +275,7 @@ class Slider extends React.Component {
     }
   }
 
-  _addDocumentEvents(type) {
+  addDocumentEvents(type) {
     if (type === 'touch') {
       // just work for chrome iOS Safari and Android Browser
       this.onTouchMoveListener = DomUtils.addEventListener(document, 'touchmove', this.onTouchMove.bind(this));
@@ -281,7 +286,7 @@ class Slider extends React.Component {
     }
   }
 
-  _removeEventons(type) {
+  removeEventons(type) {
     if (type === 'touch') {
       this.onTouchMoveListener.remove();
       this.onTouchUpListener.remove();
@@ -291,21 +296,75 @@ class Slider extends React.Component {
     }
   }
 
-  _start(position, value) {
-    this._triggerEvents('onBeforeChange');
-    this.startValue = value;
-    this.startPosition = position;
-    this.setState({
-      dragging: true,
-    });
+  end(type) {
+    this.removeEventons(type);
+    this.triggerEvents('onAfterChange');
+    this.setState({ handle: null });
   }
 
-  end(type) {
-    this._removeEventons(type);
-    this._triggerEvents('onAfterChange');
-    this.setState({
-      dragging: false,
+  render() {
+    const {handle, upperBound, lowerBound} = this.state;
+    const props = this.props;
+    const {className, prefixCls, disabled, isIncluded, withDots, range} = props;
+    const {marks, step, max, min, tipTransitionName, children} = props;
+    const marksLen = marks.length;
+
+    const sliderClassName = rcUtil.classSet({
+      [prefixCls]: true,
+      [prefixCls + '-disabled']: disabled,
+      [className]: !!className,
     });
+
+    const upperOffset = this.calcOffset(upperBound);
+    const lowerOffset = this.calcOffset(lowerBound);
+
+    let track = null;
+    if (isIncluded || range) {
+      const trackClassName = prefixCls + '-track';
+      track = <Track className={trackClassName} offset={lowerOffset} length={upperOffset - lowerOffset} />;
+    }
+
+    const handleClassName = prefixCls + '-handle';
+    const isNoTip = marksLen > 0;
+    const upper = (<Handle className={handleClassName} tipTransitionName={tipTransitionName} noTip={isNoTip}
+                     offset={upperOffset} value={upperBound} dragging={handle === 'upperBound'} />);
+
+    let lower = null;
+    if (range) {
+      lower = (<Handle className={handleClassName} tipTransitionName={tipTransitionName} noTip={isNoTip}
+                 offset={lowerOffset} value={lowerBound} dragging={handle === 'lowerBound'} />);
+    }
+
+    const upperIndex = this.getIndex(upperBound);
+
+    let steps = null;
+    if (marksLen > 0 || (step > 1 && withDots)) {
+      const stepsClassName = prefixCls + '-step';
+      const stepNum = marksLen > 0 ? marksLen : Math.floor((max - min) / step) + 1;
+      steps = (<Steps className={stepsClassName} stepNum={stepNum}
+                 lowerIndex={this.getIndex(lowerBound)} upperIndex={upperIndex}
+                 isIncluded={isIncluded || range} />);
+    }
+
+    let mark = null;
+    if (marksLen > 0) {
+      const markClassName = prefixCls + '-mark';
+      mark = (<Marks className={markClassName} marks={marks}
+                 index={upperIndex} isIncluded={isIncluded} />);
+    }
+
+    return (
+      <div ref="slider" className={sliderClassName}
+        onTouchStart={disabled ? noop : this.onTouchStart.bind(this)}
+        onMouseDown={disabled ? noop : this.onSliderMouseDown.bind(this)}>
+        {track}
+        {upper}
+        {lower}
+        {steps}
+        {mark}
+        {children}
+      </div>
+    );
   }
 }
 
@@ -314,8 +373,10 @@ Slider.propTypes = {
   max: React.PropTypes.number,
   step: React.PropTypes.number,
   defaultValue: React.PropTypes.number,
+  defaultValues: React.PropTypes.arrayOf(React.PropTypes.number),
   defaultIndex: React.PropTypes.number,
   value: React.PropTypes.number,
+  values: React.PropTypes.arrayOf(React.PropTypes.number),
   index: React.PropTypes.number,
   marks: React.PropTypes.array,
   isIncluded: React.PropTypes.bool,
@@ -328,6 +389,7 @@ Slider.propTypes = {
   onAfterChange: React.PropTypes.func,
   tipTransitionName: React.PropTypes.string,
   withDots: React.PropTypes.bool,
+  range: React.PropTypes.bool,
 };
 
 Slider.defaultProps = {
@@ -335,6 +397,7 @@ Slider.defaultProps = {
   max: 100,
   step: 1,
   defaultValue: 0,
+  defaultValues: [0, 0],
   defaultIndex: 0,
   marks: [],
   isIncluded: true,
@@ -343,6 +406,7 @@ Slider.defaultProps = {
   disabled: false,
   tipTransitionName: '',
   withDots: false,
+  range: false,
 };
 
 export default Slider;
diff --git a/src/Steps.jsx b/src/Steps.jsx
index dc49d2d..ea7ec08 100644
--- a/src/Steps.jsx
+++ b/src/Steps.jsx
@@ -1,7 +1,7 @@
 import React from 'react';
 import rcUtil from 'rc-util';
 
-const Steps = ({className, stepNum, isIncluded, index}) => {
+const Steps = ({className, stepNum, isIncluded, lowerIndex, upperIndex}) => {
   const dotClassName = className.replace('step', 'dot');
   const unit = 100 / (stepNum - 1);
 
@@ -10,7 +10,8 @@ const Steps = ({className, stepNum, isIncluded, index}) => {
     const offset = unit * i + '%';
     const style = { left: offset };
 
-    const isActived = (isIncluded && i <= index) || (!isIncluded && i === index);
+    const isActived = (isIncluded && i <= upperIndex && i >= lowerIndex ) ||
+            (!isIncluded && i === upperIndex);
     const stepClassName = rcUtil.classSet({
       [dotClassName]: true,
       [dotClassName + '-active']: isActived,
diff --git a/tests/index.spec.js b/tests/index.spec.js
index 8c18335..b2b5057 100644
--- a/tests/index.spec.js
+++ b/tests/index.spec.js
@@ -26,7 +26,7 @@ describe('rc-slider', function () {
     expect(node.find('.rc-slider').length).to.be(1);
     expect(node.find('.rc-slider-handle').length).to.be(1);
     expect(node.find('.rc-slider-track').length).to.be(1);
-    expect(slider.state.value).to.be(40);
+    expect(slider.state.upperBound).to.be(40);
     var trackWidth = node.find('.rc-slider-track')[0].style.width;
     expect(trackWidth).to.eql(node.find('.rc-slider-handle')[0].style.left);
   });
@@ -40,7 +40,7 @@ describe('rc-slider', function () {
     expect(node.find('.rc-slider').length).to.be(1);
     expect(node.find('.rc-slider-handle').length).to.be(1);
     expect(node.find('.rc-slider-track').length).to.be(1);
-    expect(slider.state.value).to.be(0);
+    expect(slider.state.upperBound).to.be(0);
 
     var sliderWithDots = React.render(
       <Slider className='rc-slider' step={20} withDots/>,
@@ -62,7 +62,7 @@ describe('rc-slider', function () {
     expect(node.find('.rc-slider-dot').length).to.be(slider.props.marks.length);
     expect(node.find('.rc-slider-mark').length).to.be(1);
     expect(node.find('.rc-slider-mark-text').length).to.be(slider.props.marks.length);
-    expect(slider.getIndex()).to.be(3);
+    expect(slider.getIndex(slider.state.upperBound)).to.be(3);
   });
 
   // it('should mouseDown works!', function (done) {