diff --git a/components/badge/ScrollNumber.jsx b/components/badge/ScrollNumber.jsx
index d218a0432e..d3a2fd1f06 100644
--- a/components/badge/ScrollNumber.jsx
+++ b/components/badge/ScrollNumber.jsx
@@ -1,5 +1,4 @@
 import React, { createElement } from 'react';
-import assign from 'object-assign';
 import { isCssAnimationSupported } from 'css-animation';
 
 function getNumberArray(num) {
@@ -94,9 +93,10 @@ export default class ScrollNumber extends React.Component {
   }
 
   render() {
-    const props = assign({}, this.props, {
+    const props = {
+      ...this.props,
       className: `${this.props.prefixCls} ${this.props.className}`
-    });
+    };
     const isBrowser = (typeof document !== 'undefined' && typeof window !== 'undefined');
     if (isBrowser && isCssAnimationSupported) {
       return createElement(
diff --git a/components/carousel/index.jsx b/components/carousel/index.jsx
index a27072fc96..c914142178 100644
--- a/components/carousel/index.jsx
+++ b/components/carousel/index.jsx
@@ -15,11 +15,10 @@ if (typeof window !== 'undefined') {
 
 import SlickCarousel from 'react-slick';
 import React from 'react';
-import assign from 'object-assign';
 
 export default class Carousel extends React.Component {
   render() {
-    let props = assign({}, this.props);
+    let props = { ...this.props };
 
     if (props.effect === 'fade') {
       props.fade = true;
diff --git a/components/date-picker/PickerMixin.jsx b/components/date-picker/PickerMixin.jsx
index f936dabe69..5746016c75 100644
--- a/components/date-picker/PickerMixin.jsx
+++ b/components/date-picker/PickerMixin.jsx
@@ -1,5 +1,4 @@
 import React from 'react';
-import objectAssign from 'object-assign';
 import defaultLocale from './locale/zh_CN';
 import DateTimeFormat from 'gregorian-calendar-format';
 import GregorianCalendar from 'gregorian-calendar';
@@ -15,8 +14,8 @@ export default {
       locale = this.context.antLocale.DatePicker;
     }
     // 统一合并为完整的 Locale
-    const result = objectAssign({}, locale, this.props.locale);
-    result.lang = objectAssign({}, locale.lang, this.props.locale.lang);
+    const result = { ...locale, ...this.props.locale };
+    result.lang = { ...locale.lang, ...this.props.locale.lang };
     return result;
   },
 
diff --git a/components/date-picker/locale/en_US.js b/components/date-picker/locale/en_US.js
index aff512e58b..0cc48401b5 100644
--- a/components/date-picker/locale/en_US.js
+++ b/components/date-picker/locale/en_US.js
@@ -1,13 +1,13 @@
-import objectAssign from 'object-assign';
 import GregorianCalendarLocale from 'gregorian-calendar/lib/locale/en_US';
 import CalendarLocale from 'rc-calendar/lib/locale/en_US';
 
 // 统一合并为完整的 Locale
-let locale = objectAssign({}, GregorianCalendarLocale);
-locale.lang = objectAssign({
+let locale = { ...GregorianCalendarLocale };
+locale.lang = {
   placeholder: 'Select date',
   timePlaceholder: 'Select time',
-}, CalendarLocale);
+  ...CalendarLocale,
+};
 
 // All settings at:
 // https://github.com/ant-design/ant-design/issues/424
diff --git a/components/date-picker/locale/zh_CN.js b/components/date-picker/locale/zh_CN.js
index b6a9177c70..b9d4f003c6 100644
--- a/components/date-picker/locale/zh_CN.js
+++ b/components/date-picker/locale/zh_CN.js
@@ -1,13 +1,13 @@
-import objectAssign from 'object-assign';
 import GregorianCalendarLocale from 'gregorian-calendar/lib/locale/zh_CN';
 import CalendarLocale from 'rc-calendar/lib/locale/zh_CN';
 
 // 统一合并为完整的 Locale
-let locale = objectAssign({}, GregorianCalendarLocale);
-locale.lang = objectAssign({
+let locale = { ...GregorianCalendarLocale };
+locale.lang = {
   placeholder: '请选择日期',
   timePlaceholder: '请选择时间',
-}, CalendarLocale);
+  ...CalendarLocale,
+};
 
 // should add whitespace between char in Button
 locale.lang.ok = '确 定';
diff --git a/components/input/index.jsx b/components/input/index.jsx
index 8dd00ba541..9fe44b2100 100644
--- a/components/input/index.jsx
+++ b/components/input/index.jsx
@@ -1,5 +1,4 @@
 import React from 'react';
-import assign from 'object-assign';
 import classNames from 'classnames';
 
 function ieGT9() {
@@ -67,7 +66,7 @@ class Input extends React.Component {
   }
 
   renderInput() {
-    const props = assign({}, this.props);
+    const props = { ...this.props };
     const prefixCls = props.prefixCls;
     if (!props.type) {
       return props.children;
diff --git a/components/modal/confirm.jsx b/components/modal/confirm.jsx
index 10a1c2f0c4..a95c81ffa6 100644
--- a/components/modal/confirm.jsx
+++ b/components/modal/confirm.jsx
@@ -3,7 +3,6 @@ import ReactDOM from 'react-dom';
 import Dialog from './Modal';
 import Icon from '../icon';
 import Button from '../button';
-import objectAssign from 'object-assign';
 
 const defaultLocale = {
   okText: '确定',
@@ -15,14 +14,14 @@ let runtimeLocale = { ...defaultLocale };
 
 export function changeConfirmLocale(newLocale) {
   if (newLocale) {
-    objectAssign(runtimeLocale, newLocale);
+    runtimeLocale = { ...runtimeLocale, ...newLocale };
   } else {
     runtimeLocale = { ...defaultLocale };
   }
 }
 
 export default function confirm(config) {
-  const props = objectAssign({}, config);
+  const props = { ...config };
   let div = document.createElement('div');
   document.body.appendChild(div);
 
diff --git a/components/modal/index.jsx b/components/modal/index.jsx
index ebfabe515f..b8e7548290 100644
--- a/components/modal/index.jsx
+++ b/components/modal/index.jsx
@@ -1,35 +1,38 @@
 import Modal from './Modal';
 import confirm from './confirm';
-import objectAssign from 'object-assign';
 
 Modal.info = function (props) {
-  const config = objectAssign({}, props, {
+  const config = {
+    ...props,
     iconClassName: 'info-circle',
     okCancel: false,
-  });
+  };
   return confirm(config);
 };
 
 Modal.success = function (props) {
-  const config = objectAssign({}, props, {
+  const config = {
+    ...props,
     iconClassName: 'check-circle',
     okCancel: false,
-  });
+  };
   return confirm(config);
 };
 
 Modal.error = function (props) {
-  const config = objectAssign({}, props, {
+  const config = {
+    ...props,
     iconClassName: 'exclamation-circle',
     okCancel: false,
-  });
+  };
   return confirm(config);
 };
 
 Modal.confirm = function (props) {
-  const config = objectAssign({}, props, {
+  const config = {
+    ...props,
     okCancel: true,
-  });
+  };
   return confirm(config);
 };
 
diff --git a/components/notification/index.jsx b/components/notification/index.jsx
index 546af285bc..70699eb0e3 100644
--- a/components/notification/index.jsx
+++ b/components/notification/index.jsx
@@ -1,6 +1,5 @@
 import React from 'react';
 import Notification from 'rc-notification';
-import assign from 'object-assign';
 import Icon from '../icon';
 
 let defaultTop = 24;
@@ -124,9 +123,10 @@ const api = {
 
 ['success', 'info', 'warn', 'error'].forEach((type) => {
   api[type] = (args) => {
-    let newArgs = assign({}, args, {
+    let newArgs = {
+      ...args,
       icon: type
-    });
+    };
     return api.open(newArgs);
   };
 });
diff --git a/components/progress/index.jsx b/components/progress/index.jsx
index ba5245e450..56ec39a298 100644
--- a/components/progress/index.jsx
+++ b/components/progress/index.jsx
@@ -1,6 +1,5 @@
 import { Circle as Progresscircle } from 'rc-progress';
 import React from 'react';
-import assign from 'object-assign';
 import warning from 'warning';
 import Icon from '../icon';
 
@@ -35,7 +34,7 @@ let Line = React.createClass({
     };
   },
   render() {
-    let props = assign({}, this.props);
+    let props = { ...this.props };
 
     if (parseInt(props.percent, 10) === 100) {
       props.status = 'success';
@@ -119,7 +118,7 @@ let Circle = React.createClass({
     };
   },
   render() {
-    let props = assign({}, this.props);
+    let props = { ...this.props };
 
     if (parseInt(props.percent, 10) === 100) {
       props.status = 'success';
diff --git a/components/table/index.jsx b/components/table/index.jsx
index acf6645175..a7ea84d80c 100644
--- a/components/table/index.jsx
+++ b/components/table/index.jsx
@@ -5,7 +5,6 @@ import Radio from '../radio';
 import FilterDropdown from './filterDropdown';
 import Pagination from '../pagination';
 import Icon from '../icon';
-import objectAssign from 'object-assign';
 import Spin from '../spin';
 import classNames from 'classnames';
 import { flatArray } from './util';
@@ -39,10 +38,11 @@ let Table = React.createClass({
       sorter: null,
       radioIndex: null,
       pagination: this.hasPagination() ?
-        objectAssign({
-          size: this.props.size,
-        }, defaultPagination, this.props.pagination) :
-        {},
+      {
+        size: this.props.size,
+        ...defaultPagination,
+        ...this.props.pagination,
+      } : {},
     };
   },
 
@@ -93,13 +93,13 @@ let Table = React.createClass({
     if (this.context.antLocale && this.context.antLocale.Table) {
       locale = this.context.antLocale.Table;
     }
-    return objectAssign({}, defaultLocale, locale, this.props.locale);
+    return { ...defaultLocale, ...locale, ...this.props.locale };
   },
 
   componentWillReceiveProps(nextProps) {
     if (('pagination' in nextProps) && nextProps.pagination !== false) {
       this.setState({
-        pagination: objectAssign({}, defaultPagination, this.state.pagination, nextProps.pagination)
+        pagination: { ...defaultPagination, ...this.state.pagination, ...nextProps.pagination },
       });
     }
     // dataSource 的变化会清空选中项
@@ -171,9 +171,10 @@ let Table = React.createClass({
   },
 
   handleFilter(column, nextFilters) {
-    const filters = objectAssign({}, this.state.filters, {
+    const filters = {
+      ...this.state.filters,
       [this.getColumnKey(column)]: nextFilters
-    });
+    };
     // Remove filters not in current columns
     const currentColumnKeys = this.props.columns.map(c => this.getColumnKey(c));
     Object.keys(filters).forEach((columnKey) => {
@@ -276,7 +277,7 @@ let Table = React.createClass({
   },
 
   handlePageChange(current) {
-    let pagination = objectAssign({}, this.state.pagination);
+    let pagination = { ...this.state.pagination };
     if (current) {
       pagination.current = current;
     } else {
@@ -416,7 +417,7 @@ let Table = React.createClass({
   renderColumnsDropdown(columns) {
     const locale = this.getLocale();
     return columns.map((originColumn, i) => {
-      let column = objectAssign({}, originColumn);
+      let column = { ...originColumn };
       let key = this.getColumnKey(column, i);
       let filterDropdown;
       let sortButton;
@@ -587,7 +588,7 @@ let Table = React.createClass({
 
     columns = this.renderColumnsDropdown(columns);
     columns = columns.map((column, i) => {
-      const newColumn = objectAssign({}, column);
+      const newColumn = { ...column };
       newColumn.key = newColumn.key || newColumn.dataIndex || i;
       return newColumn;
     });
diff --git a/components/time-picker/index.jsx b/components/time-picker/index.jsx
index c101430b57..8695b5e89a 100644
--- a/components/time-picker/index.jsx
+++ b/components/time-picker/index.jsx
@@ -1,7 +1,6 @@
 import React from 'react';
 import DateTimeFormat from 'gregorian-calendar-format';
 import RcTimePicker from 'rc-time-picker/lib/TimePicker';
-import objectAssign from 'object-assign';
 import defaultLocale from './locale/zh_CN';
 import classNames from 'classnames';
 import GregorianCalendar from 'gregorian-calendar';
@@ -77,12 +76,12 @@ const TimePicker = React.createClass({
       locale = this.context.antLocale.TimePicker;
     }
     // 统一合并为完整的 Locale
-    return objectAssign({}, locale, this.props.locale);
+    return { ...locale, ...this.props.locale };
   },
 
   render() {
     const locale = this.getLocale();
-    const props = objectAssign({}, this.props);
+    const props = { ...this.props };
     props.placeholder = ('placeholder' in this.props)
       ? props.placeholder : locale.placeholder;
     if (props.defaultValue) {
diff --git a/components/upload/index.jsx b/components/upload/index.jsx
index 91ab98b322..350fba5323 100644
--- a/components/upload/index.jsx
+++ b/components/upload/index.jsx
@@ -1,6 +1,5 @@
 import React from 'react';
 import RcUpload from 'rc-upload';
-import assign from 'object-assign';
 import UploadList from './uploadList';
 import getFileItem from './getFileItem';
 import classNames from 'classnames';
@@ -218,13 +217,14 @@ const Upload = React.createClass({
 
   render() {
     let type = this.props.type || 'select';
-    let props = assign({}, this.props, {
+    let props = {
+      ...this.props,
       onStart: this.onStart,
       onError: this.onError,
       onProgress: this.onProgress,
       onSuccess: this.onSuccess,
       beforeUpload: this.beforeUpload,
-    });
+    };
     let uploadList;
     if (this.props.showUploadList) {
       uploadList = (
diff --git a/package.json b/package.json
index fcc083f72d..0c45be6b0f 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,6 @@
     "css-animation": "~1.1.0",
     "gregorian-calendar": "~4.1.0",
     "gregorian-calendar-format": "~4.1.0",
-    "object-assign": "~4.0.1",
     "rc-animate": "~2.0.2",
     "rc-calendar": "~5.4.0",
     "rc-cascader": "~0.9.0",
@@ -115,6 +114,7 @@
     "mark-twain": "^0.2.0-beta.4",
     "mkdirp": "~0.5.1",
     "nico-jsx": "~0.9.0",
+    "object-assign": "~4.0.1",
     "postcss-loader": "^0.8.0",
     "pre-commit": "1.x",
     "querystring": "^0.2.0",