diff --git a/docs/renderers/Range.md b/docs/renderers/Range.md
index f1204233a..d2be0aa0e 100644
--- a/docs/renderers/Range.md
+++ b/docs/renderers/Range.md
@@ -6,6 +6,9 @@
 -   `min` 最小值
 -   `max` 最大值
 -   `step` 步长
+-   `multiple` 支持选择范围，默认为`false`
+-   `joinValuse` 默认为 `true`，选择的 `value` 会通过 `delimiter` 连接起来，否则直接将以`{min: 1, max: 100}`的形式提交，开启`multiple`时有效
+-   `delimiter` 默认为 `,`
 
 ```schema:height="400" scope="form-item"
 {
diff --git a/docs/renderers/Select.md b/docs/renderers/Select.md
index b3465bcb0..564c471d2 100644
--- a/docs/renderers/Select.md
+++ b/docs/renderers/Select.md
@@ -16,6 +16,9 @@
 -   `delimiter` 默认为 `,`
 -   `clearable` 默认为 `false`, 当设置为 `true` 时，已选中的选项右侧会有个小 `X` 用来取消设置。
 -   `searchable` 默认为 `false`，表示可以通过输入部分内容检索出选项。
+-   `checkall` 默认为 `false` 开启后支持全选
+-   `checkAllLabel` 默认为 `全选`, 全选的文字
+-   `defaultCheckAll` 是否默认全选，默认为`false`
 -   更多配置请参考 [FormItem](./FormItem.md)
 
 单选
diff --git a/scss/_variables.scss b/scss/_variables.scss
index 5e4b78d3a..02f66de17 100644
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -675,6 +675,7 @@ $Form-select-menu-onActive-color: $info !default;
 $Form-select-menu-onActive-bg: transparent !default;
 $Form-select-menu-onDisabled-color: $text--muted-color !default;
 $Form-select-menu-onDisabled-bg: transparent !default;
+$Form-select-checkall-bottomBorder: #eceff8 !default;
 
 // InputGroup
 $InputGroup-height: $Form-input-height !default;
diff --git a/scss/components/form/_range.scss b/scss/components/form/_range.scss
index 38bceefb2..c358e9a73 100644
--- a/scss/components/form/_range.scss
+++ b/scss/components/form/_range.scss
@@ -13,12 +13,17 @@
         .#{$ns}InputRange-label--mid {
             left: calc(50% - 60px);
         }
+
+        &.is-multiple {
+            .#{$ns}InputRange {
+                width: calc(100% - 210px);
+            }
+        }
     }
 
     .#{$ns}InputRange {
         &-input {
             font-size: $fontSizeSm;
-            width: px2rem(74px);
             position: absolute;
             right: px2rem(26px);
             top: px2rem(12px);
@@ -26,7 +31,7 @@
 
             input {
                 padding: px2rem(10px);
-                width: 100%;
+                width: px2rem(74px);
                 height: 100%;
 
                 &:focus {
@@ -34,6 +39,11 @@
                     border: $borderWidth solid $info;
                 }
             }
+
+            &-separator {
+                display: inline-block;
+                padding: 0 5px;
+            }
         }
 
         &-unit {
@@ -167,6 +177,10 @@
         .#{$ns}InputRange.is-disabled & {
             background: $InputRange-track-onDisabled-bg;
         }
+
+        &.is-active {
+            background: $InputRange-track-onActive-bg;
+        }
     }
 
     &-track--background {
diff --git a/scss/components/form/_select.scss b/scss/components/form/_select.scss
index 13e760c82..8e63eab0c 100644
--- a/scss/components/form/_select.scss
+++ b/scss/components/form/_select.scss
@@ -156,7 +156,17 @@
         user-select: none;
     }
 
+    &-checkall {
+        padding: (
+                $Form-select-menu-height - $Form-input-lineHeight *
+                    $Form-input-fontSize - px2rem(2px)
+            )/2 $Form-select-paddingX;
+        border-bottom: px2rem(1px) solid $Form-select-checkall-bottomBorder;
+        min-width: px2rem(100px);
+    }
+
     &-option {
+        min-width: px2rem(100px);
         padding: (
                 $Form-select-menu-height - $Form-input-lineHeight *
                     $Form-input-fontSize - px2rem(2px)
@@ -177,6 +187,10 @@
             background-color: $Form-select-menu-onDisabled-bg;
         }
 
+        &.is-checkAll {
+            border-bottom: px2rem(1px) solid $Form-select-checkall-bottomBorder;
+        }
+
         &--placeholder {
             color: $Form-input-placeholderColor;
         }
diff --git a/src/components/Checkbox.tsx b/src/components/Checkbox.tsx
index dadf9851a..5243863c8 100644
--- a/src/components/Checkbox.tsx
+++ b/src/components/Checkbox.tsx
@@ -1,3 +1,4 @@
+
 /**
  * @file Checkbox
  * @author fex
@@ -6,6 +7,7 @@
 import * as React from 'react';
 import * as cx from 'classnames';
 import {ClassNamesFn, themeable} from '../theme';
+import { autobind } from '../utils/helper';
 
 const sizeMap = {
     sm: 'i-checks-sm',
@@ -23,6 +25,7 @@ interface CheckboxProps {
     label?: string;
     className?: string;
     onChange?: (value: any) => void;
+    onClick?: (e:any, checked:boolean) => void;
     value?: any;
     containerClass?: string;
     inline?: boolean;
@@ -44,13 +47,8 @@ export class Checkbox extends React.Component<CheckboxProps, any> {
         type: 'checkbox',
     };
 
-    constructor(props: CheckboxProps) {
-        super(props);
-
-        this.hanldeCheck = this.hanldeCheck.bind(this);
-    }
-
-    hanldeCheck(e: React.ChangeEvent<any>) {
+    @autobind
+    handleCheck(e: React.ChangeEvent<any>) {
         const {trueValue, falseValue, onChange} = this.props;
 
         if (!onChange) {
@@ -60,6 +58,25 @@ export class Checkbox extends React.Component<CheckboxProps, any> {
         onChange(e.currentTarget.checked ? trueValue : falseValue);
     }
 
+    @autobind
+    handleClick(e:any) {
+        const {
+            checked,
+            value,
+            trueValue,
+            onClick,
+            disabled
+        } = this.props;
+
+        const isChecked:boolean = !!(typeof checked !== 'undefined'
+            ? checked
+            : typeof value === 'undefined'
+                ? value
+                : value == trueValue);
+
+        disabled ? null : onClick && onClick(e, isChecked);
+    }
+
     render() {
         let {
             size,
@@ -88,6 +105,7 @@ export class Checkbox extends React.Component<CheckboxProps, any> {
                     },
                     className
                 )}
+                onClick={this.handleClick}
             >
                 <input
                     type={type}
@@ -98,7 +116,7 @@ export class Checkbox extends React.Component<CheckboxProps, any> {
                             ? value
                             : value == trueValue
                     }
-                    onChange={this.hanldeCheck}
+                    onChange={this.handleCheck}
                     disabled={disabled}
                     readOnly={readOnly}
                     name={name}
@@ -110,4 +128,4 @@ export class Checkbox extends React.Component<CheckboxProps, any> {
     }
 }
 
-export default themeable(Checkbox);
+export default themeable(Checkbox);
\ No newline at end of file
diff --git a/src/components/Range.tsx b/src/components/Range.tsx
index a090beae8..f97dc7ed8 100644
--- a/src/components/Range.tsx
+++ b/src/components/Range.tsx
@@ -16,7 +16,10 @@ interface RangeProps extends RendererProps {
     className?: string;
     min: number;
     max: number;
-    value?: number;
+    value: {
+        min: number,
+        max: number
+    } | number;
     classPrefix: string;
     classnames: ClassNamesFn;
 }
@@ -28,10 +31,10 @@ export class Range extends React.Component<RangeProps, any> {
     };
 
     render() {
-        const {min, max, value, className, classPrefix: ns} = this.props;
+        const {min, max, value, className, classPrefix: ns, multiple} = this.props;
 
         const classNames = {
-            activeTrack: `${ns}InputRange-track is-active`,
+            activeTrack: multiple ? `${ns}InputRange-track is-active` : `${ns}InputRange-track`,
             disabledInputRange: `${ns}InputRange is-disabled`,
             inputRange: `${ns}InputRange`,
             labelContainer: `${ns}InputRange-labelContainer`,
@@ -50,7 +53,8 @@ export class Range extends React.Component<RangeProps, any> {
                 classNames={classNames}
                 minValue={min}
                 maxValue={max}
-                value={typeof value === 'number' ? value : min}
+                value={value}
+                multiple={multiple}
             />
         );
     }
diff --git a/src/components/Select.tsx b/src/components/Select.tsx
index b5c6ca774..92f500fcd 100644
--- a/src/components/Select.tsx
+++ b/src/components/Select.tsx
@@ -14,12 +14,14 @@ import Downshift, {ControllerStateAndHelpers} from 'downshift';
 import * as cx from 'classnames';
 import {closeIcon} from './icons';
 import * as matchSorter from 'match-sorter';
-import {noop, anyChanged} from '../utils/helper';
+import {noop} from '../utils/helper';
 import find = require('lodash/find');
 import isPlainObject = require('lodash/isPlainObject');
+import union = require('lodash/union');
 import {highlight} from '../renderers/Form/Options';
 import {findDOMNode} from 'react-dom';
 import {ClassNamesFn, themeable} from '../theme';
+import Checkbox from './Checkbox';
 
 export interface Option {
     label?: string;
@@ -64,7 +66,7 @@ export function value2array(value: OptionValue | Array<OptionValue>, props: Part
     } else if (Array.isArray(value)) {
         value = value[0];
     }
-
+    
     let expandedValue = expandValue(value as OptionValue, props);
     return expandedValue ? [expandedValue] : [];
 }
@@ -148,6 +150,9 @@ interface SelectProps {
     onNewOptionClick: (value: Option) => void;
     onFocus?: Function;
     onBlur?: Function;
+    checkAll?: boolean;
+    checkAllLabel?: string;
+    defaultCheckAll?: boolean;
 }
 
 interface SelectState {
@@ -156,6 +161,8 @@ interface SelectState {
     inputValue: string;
     highlightedIndex: number;
     selection: Array<Option>;
+    checkedAll: boolean;
+    checkedPartial: boolean;
 }
 
 export class Select extends React.Component<SelectProps, SelectState> {
@@ -176,6 +183,9 @@ export class Select extends React.Component<SelectProps, SelectState> {
         onNewOptionClick: noop,
         inline: false,
         disabled: false,
+        checkAll: false,
+        checkAllLabel: '全选',
+        defaultCheckAll: false
     };
 
     input: HTMLInputElement;
@@ -196,6 +206,7 @@ export class Select extends React.Component<SelectProps, SelectState> {
         this.handleStateChange = this.handleStateChange.bind(this);
         this.handleKeyPress = this.handleKeyPress.bind(this);
         this.getTarget = this.getTarget.bind(this);
+        this.toggleCheckAll = this.toggleCheckAll.bind(this);
 
         this.state = {
             isOpen: false,
@@ -203,11 +214,34 @@ export class Select extends React.Component<SelectProps, SelectState> {
             inputValue: '',
             highlightedIndex: -1,
             selection: value2array(props.value, props),
+            checkedAll: false,
+            checkedPartial: false
         };
     }
 
     componentDidMount() {
-        const {loadOptions} = this.props;
+        const {loadOptions, options, checkAll, defaultCheckAll} = this.props;
+        let {selection} = this.state;
+
+        if (checkAll && options.length) {
+            let checkedAll = false;
+            if (selection.length) {
+                const optionsValues = options.map(option => option.value);
+                const selectionValues = selection.map(select => select.value);
+                checkedAll = optionsValues.every(option => selectionValues.indexOf(option) > -1);
+            }
+            if (defaultCheckAll) {
+                checkedAll = true;
+                selection = union(options, selection);
+            }
+            if (checkedAll) {
+                this.setState({
+                    checkedAll: true,
+                    checkedPartial: true,
+                    selection: selection 
+                });
+            }
+        }
 
         loadOptions && loadOptions('');
     }
@@ -282,13 +316,44 @@ export class Select extends React.Component<SelectProps, SelectState> {
         this.input = ref;
     }
 
+    toggleCheckAll() {
+        let {options, onChange} = this.props;
+        const {checkedAll} = this.state;
+
+        if (!checkedAll) {
+            this.setState({
+                selection: options,
+                checkedAll: true,
+                checkedPartial: true,
+                isOpen: true
+            });
+            onChange(options);
+        } else {
+            this.setState({
+                selection: [],
+                checkedAll: false,
+                checkedPartial: false,
+                isOpen: true
+            });
+            onChange([]);
+        }
+    }
+
     removeItem(index: number, e?: React.MouseEvent<HTMLElement>) {
-        let value = this.props.value;
-        const onChange = this.props.onChange;
+        const {onChange, options, checkAll} = this.props;
+        let {selection: value} = this.state;
 
         e && e.stopPropagation();
         value = Array.isArray(value) ? value.concat() : [value];
         value.splice(index, 1);
+
+        if (checkAll && (!value.length || value.length < options.length)) {
+            const checkedPartial = value.some((item:Option) => options.indexOf(item) > -1);
+            this.setState({
+                checkedAll: false,
+                checkedPartial: checkedPartial
+            });
+        }
         onChange(value);
     }
 
@@ -304,9 +369,8 @@ export class Select extends React.Component<SelectProps, SelectState> {
     }
 
     handleChange(selectItem: any) {
-        const {onChange, multiple, onNewOptionClick} = this.props;
-
-        let selection = this.state.selection;
+        const {onChange, multiple, onNewOptionClick, options, checkAll} = this.props;
+        let {checkedAll, selection, checkedPartial} = this.state;
 
         if (selectItem.isNew) {
             delete selectItem.isNew;
@@ -314,20 +378,46 @@ export class Select extends React.Component<SelectProps, SelectState> {
         }
 
         if (multiple) {
-            selection = selection.concat();
-            const idx = selection.indexOf(selectItem);
-            if (~idx) {
-                selection.splice(idx, 1);
+            if (checkAll) {
+                if (selectItem.__all) {
+                    this.toggleCheckAll();
+                } else {
+                    selection = selection.concat();
+                    const idx = selection.indexOf(selectItem);
+                    if (~idx) {
+                        selection.splice(idx, 1);
+                    } else {
+                        selection.push(selectItem);
+                    }
+                    onChange(selection);
+
+                    const optionsValues = options.map(option => option.value);
+                    const selectionValues = selection.map(select => select.value);
+                    checkedAll = optionsValues.every(option => selectionValues.indexOf(option) > -1);
+                    checkedPartial = optionsValues.some(option => selectionValues.indexOf(option) > -1);
+                    
+                    this.setState({
+                        checkedAll,
+                        checkedPartial
+                    });
+                }
             } else {
-                selection.push(selectItem);
+                selection = selection.concat();
+                const idx = selection.indexOf(selectItem);
+                if (~idx) {
+                    selection.splice(idx, 1);
+                } else {
+                    selection.push(selectItem);
+                }
+                onChange(selection);
             }
-            onChange(selection);
         } else {
             onChange(selectItem);
         }
     }
 
     handleStateChange(changes: any) {
+        const {multiple, checkAll} = this.props;
         let update: any = {};
         const loadOptions = this.props.loadOptions;
         let doLoad = false;
@@ -346,8 +436,8 @@ export class Select extends React.Component<SelectProps, SelectState> {
                 update = {
                     ...update,
                     inputValue: '',
-                    isOpen: false,
-                    isFocused: false,
+                    isOpen: multiple && checkAll ? true : false,
+                    isFocused: multiple && checkAll ? true : false
                 };
                 doLoad = true;
                 break;
@@ -419,7 +509,10 @@ export class Select extends React.Component<SelectProps, SelectState> {
             promptTextCreator,
             multiple,
             classnames: cx,
+            checkAll,
+            checkAllLabel,
         } = this.props;
+        const {selection, checkedAll, checkedPartial} = this.state;
 
         let filtedOptions: Array<Option> =
             inputValue && isOpen && !loadOptions
@@ -429,7 +522,11 @@ export class Select extends React.Component<SelectProps, SelectState> {
                 : options.concat();
 
         if (multiple) {
-            filtedOptions = filtedOptions.filter((option: any) => !~selectedItem.indexOf(option));
+            if (checkAll) {
+                filtedOptions.unshift({label: checkAllLabel, value: 'all', __all: true});
+            } else {
+                filtedOptions = filtedOptions.filter((option: any) => !~selectedItem.indexOf(option));
+            }
         }
 
         if (
@@ -452,29 +549,54 @@ export class Select extends React.Component<SelectProps, SelectState> {
         const menu = (
             <div className={cx('Select-menu')}>
                 {filtedOptions.length ? (
-                    filtedOptions.map((item, index) => (
-                        <div
-                            {...getItemProps({
-                                key: index,
-                                index,
-                                item,
-                                disabled: item.disabled,
-                            })}
-                            className={cx(`Select-option`, {
-                                'is-disabled': item.disabled,
-                                'is-highlight': highlightedIndex === index,
-                                'is-active':
-                                    selectedItem === item ||
-                                    (Array.isArray(selectedItem) && ~selectedItem.indexOf(item)),
-                            })}
-                        >
-                            {item.isNew
-                                ? promptTextCreator(item.label as string)
-                                : item.disabled
-                                ? item[labelField]
-                                : highlight(item[labelField], inputValue as string, cx('Select-option-hl'))}
-                        </div>
-                    ))
+                    filtedOptions.map((item, index) => {
+                        const checked = checkAll ? selection.some((o:Option) => o.value == item.value) : false;
+
+                        return (
+                            <div
+                                {...getItemProps({
+                                    key: index,
+                                    index,
+                                    item,
+                                    disabled: item.disabled,
+                                })}
+                                className={cx(`Select-option`, {
+                                    'is-disabled': item.disabled,
+                                    'is-highlight': highlightedIndex === index,
+                                    'is-checkAll': checkAll && index === 0,
+                                    'is-active':
+                                        selectedItem === item ||
+                                        (Array.isArray(selectedItem) && ~selectedItem.indexOf(item)),
+                                })}
+                            >
+                                {checkAll ? 
+                                    index === 0 ? (
+                                        <Checkbox
+                                            checked={checkedPartial}
+                                            partial={checkedPartial && !checkedAll}
+                                        >
+                                            {checkAllLabel}
+                                        </Checkbox>
+                                    ) : (
+                                        <Checkbox
+                                            checked={checked}
+                                            trueValue={item.value}
+                                        >
+                                            {item.isNew
+                                                ? promptTextCreator(item.label as string)
+                                                : item.disabled
+                                                ? item[labelField]
+                                                : highlight(item[labelField], inputValue as string, cx('Select-option-hl'))}
+                                        </Checkbox>      
+                                ) : (
+                                    item.isNew
+                                        ? promptTextCreator(item.label as string)
+                                        : item.disabled
+                                        ? item[labelField]
+                                        : highlight(item[labelField], inputValue as string, cx('Select-option-hl'))
+                                 )}
+                            </div>
+                    )})
                 ) : (
                     <div className={cx('Select-option Select-option--placeholder')}>{noResultsText}</div>
                 )}
diff --git a/src/renderers/Form/Range.tsx b/src/renderers/Form/Range.tsx
index 41f826035..6a650a883 100644
--- a/src/renderers/Form/Range.tsx
+++ b/src/renderers/Form/Range.tsx
@@ -1,4 +1,7 @@
 import * as React from 'react';
+import isNumber = require('lodash/isNumber');
+import isObject = require('lodash/isObject');
+import isEqual = require('lodash/isEqual');
 import {
     FormItem,
     FormControlProps
@@ -17,7 +20,11 @@ export interface RangeProps extends FormControlProps {
     disabled?: boolean;
     showInput?: boolean;
     className?: string;
-    onChange: (value: number) => void;
+    value: any;
+    onChange: (value: any) => void;
+    multiple?: boolean;
+    joinValues?: boolean;
+    delimiter?: string;
 };
 
 export interface DefaultProps {
@@ -28,12 +35,38 @@ export interface DefaultProps {
     clearable: boolean;
     disabled: boolean;
     showInput: boolean;
+    multiple: boolean;
+    joinValues: boolean;
+    delimiter: string;
 };
 
+export function formatValue(value: string | number | {min: number, max: number}, props: Partial<RangeProps>) {
+    if (props.multiple) {
+        if (typeof value === 'string') {
+            const [minValue, maxValue] = value.split(props.delimiter || ',').map(v => Number(v));
+            return {
+                min: props.min && minValue < props.min && props.min || minValue || props.min,
+                max: props.max && maxValue > props.max && props.max || maxValue || props.max
+            }
+        } else if (typeof value === 'object') {
+            return {
+                min: props.min && value.min < props.min && props.min || value.min || props.min,
+                max: props.max && value.max > props.max && props.max || value.max || props.max
+            }
+        }
+    }
+    return value || props.min;
+}
+
 type PropsWithDefaults = RangeProps & DefaultProps;
 
 export interface RangeState {
-    value: any;
+    value: {
+        min?: number,
+        max?: number
+    } | number | string | undefined;
+    minValue?: any;
+    maxValue?: any; 
 };
 
 export default class RangeControl extends React.PureComponent<RangeProps, RangeState> {
@@ -46,27 +79,53 @@ export default class RangeControl extends React.PureComponent<RangeProps, RangeS
         unit: '',
         clearable: true,
         disabled: false,
-        showInput: false
+        showInput: false,
+        multiple: false,
+        joinValues: true,
+        delimiter: ','
     }
 
     constructor(props: RangeProps) {
         super(props);
-        this.state = {
-            value: parseFloat(props.value) || 0
-        };
+        const {value: propsValue, multiple, delimiter, min, max} = this.props;
+        const value = formatValue(propsValue, {
+            multiple,
+            delimiter,
+            min,
+            max
+        });
 
+        this.state = {
+            value: value,
+            minValue: isObject(value) ? value.min : min,
+            maxValue: isObject(value) ? value.max : max
+        };
         this.handleChange = this.handleChange.bind(this);
         this.handleEnd = this.handleEnd.bind(this);
         this.handleInputChange = this.handleInputChange.bind(this);
-        this.rangeValue = this.rangeValue.bind(this);
         this.midLabelRef = this.midLabelRef.bind(this);
+        this.clearValue = this.clearValue.bind(this);
+        this.handleMinInputBlur = this.handleMinInputBlur.bind(this);
+        this.handleMaxInputBlur = this.handleMaxInputBlur.bind(this);
+        this.handleMinInputChange = this.handleMinInputChange.bind(this);
+        this.handleMaxInputChange = this.handleMaxInputChange.bind(this);
     }
 
     componentWillReceiveProps(nextProps: RangeProps) {
-        const { value } = this.props;
-        if (value !== nextProps.value) {
+        const {value} = this.props;
+        const {value: nextPropsValue, multiple, delimiter, min, max} = nextProps;
+        if (value !== nextPropsValue) {
+            const value = formatValue(nextPropsValue, {
+                multiple,
+                delimiter,
+                min,
+                max
+            });
+
             this.setState({
-                value: parseFloat(nextProps.value) || 0
+                value: value,
+                minValue: isObject(value) ? value.min : min,
+                maxValue: isObject(value) ? value.max : max
             });
         }
     }
@@ -102,17 +161,42 @@ export default class RangeControl extends React.PureComponent<RangeProps, RangeS
 
     handleChange(value: any) {
         this.setState({
-            value: this.getValue(value)
+            value: value,
+            minValue: value.min,
+            maxValue: value.max
         });
     }
 
+    clearValue() {
+        const {multiple, min, max} = this.props;
+        if (multiple) {
+            this.setState({
+                value: {
+                    min: min,
+                    max: max
+                },
+                minValue: min,
+                maxValue: max
+            });
+        } else {
+            this.setState({
+                value: min
+            });
+        }
+    }
+
     handleEnd(value: any) {
+        const {multiple, joinValues, delimiter} = this.props;
+        let endValue = value;
+        if (multiple && joinValues) {
+            endValue = [value.min, value.max].join(delimiter || ',');
+        }
         const {
             onChange
         } = this.props;
         this.setState({
             value
-        }, () => onChange(value));
+        }, () => onChange(endValue));
     }
 
     getStepPrecision() {
@@ -125,25 +209,39 @@ export default class RangeControl extends React.PureComponent<RangeProps, RangeS
             : step.toString().split(".")[1].length;
     }
 
-    getValue(value: any) {
+    getValue(value: any, type?: string) {
         const {
             max,
             min,
             step
         } = this.props as PropsWithDefaults;
+        const {value: stateValue} = this.state;
 
         if (value === '' || value === '-' || new RegExp('^[-]?\\d+[.]{1}[0]{0,' + this.getStepPrecision() + '}$').test(value)) {
             return value;
         }
 
-        // if (!value || value === '00') {
-        //     return min;
-        // }
-
         value = Math.round(parseFloat(value) / step) * step;
         value = (step < 1) ? parseFloat(value.toFixed(this.getStepPrecision())) : ~~value;
 
-        return (value < min && min) || (value > max && max) || value;
+        switch(type) {
+            case 'min':
+                {
+                    if (isObject(stateValue) && isNumber(stateValue.max)) {
+                        if (value >= stateValue.max && (min <= stateValue.max - step)) {
+                            return stateValue.max - step;
+                        }
+                        if (value < stateValue.max - step) {
+                            return value;
+                        }
+                    }
+                    return min;
+                }
+            case 'max':
+                return isObject(stateValue) && isNumber(stateValue.min) ? (value > max && max) || (value <= stateValue.min && (stateValue.min + step)) || value : max;
+            default:
+                return (value < min && min) || (value > max && max) || value;
+        }
     }
 
     handleInputChange(evt: React.ChangeEvent<HTMLInputElement>) {
@@ -152,12 +250,44 @@ export default class RangeControl extends React.PureComponent<RangeProps, RangeS
         });
     }
 
-    rangeValue() {
-        let { value } = this.state;
-        // if (/^\d+[.]{1}$/.test(value)) {
-        //     return this.props.min;
-        // }
-        return parseFloat(value);
+    handleMinInputBlur(evt: React.ChangeEvent<HTMLInputElement>) {
+        const minValue = this.getValue(evt.target.value, 'min');
+        const {value} = this.state;
+        isObject(value) ? 
+            this.setState({
+                value: {
+                    min: minValue,
+                    max: value.max
+                },
+                minValue: minValue
+            }) 
+            : null;
+    }
+
+    handleMaxInputBlur(evt: React.ChangeEvent<HTMLInputElement>) {
+        const maxValue = this.getValue(evt.target.value, 'max');
+        const {value} = this.state;
+        isObject(value) ? 
+            this.setState({
+                value: {
+                    min: value.min,
+                    max: maxValue
+                },
+                maxValue: maxValue
+            })
+            : null;
+    }
+
+    handleMinInputChange(evt: React.ChangeEvent<HTMLInputElement>) {
+        this.setState({
+            minValue: evt.target.value
+        });
+    }
+
+    handleMaxInputChange(evt: React.ChangeEvent<HTMLInputElement>) {
+        this.setState({
+            maxValue: evt.target.value
+        });
     }
 
     render() {
@@ -170,8 +300,8 @@ export default class RangeControl extends React.PureComponent<RangeProps, RangeS
             name,
             disabled,
             className,
-            onChange,
             showInput,
+            multiple,
             classnames: cx,
             classPrefix: ns,
         } = this.props as PropsWithDefaults;
@@ -180,10 +310,11 @@ export default class RangeControl extends React.PureComponent<RangeProps, RangeS
             <div className={cx("RangeControl", {
                 'RangeControl--withInput': showInput,
                 'RangeControl--clearable': clearable,
+                'is-multiple': multiple
             }, className)}>
                 <InputRange
                     classPrefix={ns}
-                    value={this.rangeValue()}
+                    value={this.state.value}
                     disabled={disabled}
                     onChange={this.handleChange}
                     onChangeComplete={this.handleEnd}
@@ -191,6 +322,7 @@ export default class RangeControl extends React.PureComponent<RangeProps, RangeS
                     min={min}
                     step={step}
                     formatLabel={(value: any) => value + unit}
+                    multiple={multiple}
                 />
 
                 <span className={cx("InputRange-label InputRange-label--mid")} ref={this.midLabelRef}>
@@ -199,38 +331,46 @@ export default class RangeControl extends React.PureComponent<RangeProps, RangeS
                     </span>
                 </span>
 
-                {showInput ? (
-                    <div className={cx("InputRange-input")}>
-                        <input
-                            className={this.state.value !== min ? 'is-active' : ''}
-                            type="text"
-                            name={name}
-                            value={this.state.value}
-                            disabled={disabled}
-                            onChange={this.handleInputChange}
-                        />
-                        {/* <span
-                            className={cx("InputRange-unit", this.state.value !== min ? 'is-active' : '')}
-                        >
-                            {unit}
-                        </span> */}
-                    </div>
-                ) : null}
+                {showInput ? 
+                    multiple && isObject(this.state.value) ? (
+                        <div className={cx("InputRange-input is-multiple")}>
+                            <input
+                                className={this.state.value.min !== min ? 'is-active' : ''}
+                                type="text"
+                                name={name}
+                                value={this.state.minValue}
+                                disabled={disabled}
+                                onChange={this.handleMinInputChange}
+                                onBlur={this.handleMinInputBlur}
+                            />
+                            <span className={cx("InputRange-input-separator")}> - </span>
+                            <input
+                                className={this.state.value.max !== max ? 'is-active' : ''}
+                                type="text"
+                                name={name}
+                                value={this.state.maxValue}
+                                disabled={disabled}
+                                onChange={this.handleMaxInputChange}
+                                onBlur={this.handleMaxInputBlur}
+                            />
+                        </div>
+                    ) : (
+                        <div className={cx("InputRange-input")}>
+                            <input
+                                className={this.state.value !== min ? 'is-active' : ''}
+                                type="text"
+                                name={name}
+                                value={!isObject(this.state.value) ? this.state.value : 0}
+                                disabled={disabled}
+                                onChange={this.handleInputChange}
+                            />
+                        </div>
+                    )
+                 : null}
 
-                {/* {clearable && this.sliderValue() ? (
-                    <span
-                        className={cx('icon icon-clear', {
-                            'active': (this.state.value !== min)
-                        })}
-                        onClick={() => this.handleChange(0)}
-                    >
-                        <i className="iconfont icon-x"></i>
-                    </span>
-                ) : null} */}
-
-                {clearable && this.rangeValue() !== min && showInput ? (
-                    <a onClick={() => this.handleChange(min)} className={cx("InputRange-clear", {
-                        'is-active': (this.state.value !== min)
+                {clearable && showInput ? (
+                    <a onClick={() => this.clearValue()} className={cx("InputRange-clear", {
+                        'is-active': (multiple ? isEqual(this.state.value, {min: min, max: max}) : this.state.value !== min)
                     })}>{closeIcon}</a>
                 ) : null}
             </div >