diff --git a/examples/single.js b/examples/single.js
index f2452a964..ee04bb931 100644
--- a/examples/single.js
+++ b/examples/single.js
@@ -72,7 +72,7 @@ class Test extends React.Component {
                 jack
               </b>
             </Option>
-            <Option value="11" text="lucy">lucy</Option>
+            <Option value={{ id: 11 }} text="lucy">lucy</Option>
             <Option value="21" disabled text="disabled">disabled</Option>
             <Option value="31" text="yiminghe">yiminghe</Option>
             {[0, 1, 2, 3, 4, 5, 6, 7, 8, 9].map((i) => {
diff --git a/package.json b/package.json
index 5620f9d6f..ecd13daf2 100644
--- a/package.json
+++ b/package.json
@@ -69,6 +69,7 @@
     "classnames": "2.x",
     "component-classes": "1.x",
     "dom-scroll-into-view": "1.x",
+    "lodash.isequal": "^4.5.0",
     "prop-types": "^15.5.8",
     "rc-animate": "2.x",
     "rc-menu": "^5.0.11",
diff --git a/src/Option.jsx b/src/Option.jsx
index 7b7151323..546a42628 100644
--- a/src/Option.jsx
+++ b/src/Option.jsx
@@ -3,7 +3,7 @@ import PropTypes from 'prop-types';
 
 export default class Option extends React.Component {
   static propTypes = {
-    value: PropTypes.string,
+    value: PropTypes.any,
   };
 
   static isSelectOption = true;
diff --git a/src/PropTypes.js b/src/PropTypes.js
index 2beb509e0..0801aa05a 100644
--- a/src/PropTypes.js
+++ b/src/PropTypes.js
@@ -2,7 +2,7 @@ import PropTypes from 'prop-types';
 
 function valueType(props, propName, componentName) {
   const labelInValueShape = PropTypes.shape({
-    key: PropTypes.string.isRequired,
+    key: PropTypes.any.isRequired,
     label: PropTypes.string,
   });
   if (props.labelInValue) {
@@ -25,8 +25,8 @@ function valueType(props, propName, componentName) {
     );
   } else {
     const validate = PropTypes.oneOfType([
-      PropTypes.arrayOf(PropTypes.string),
-      PropTypes.string,
+      PropTypes.arrayOf(PropTypes.any),
+      PropTypes.any,
     ]);
     return validate(...arguments);
   }
diff --git a/src/Select.jsx b/src/Select.jsx
index ce0a7191c..f7b363a35 100644
--- a/src/Select.jsx
+++ b/src/Select.jsx
@@ -22,11 +22,13 @@ import {
   splitBySeparators,
   findIndexInValueByLabel,
   defaultFilterFn,
+  validateOptionValue,
 } from './util';
 import SelectTrigger from './SelectTrigger';
 import { SelectPropTypes } from './PropTypes';
 import { Item as MenuItem, ItemGroup as MenuItemGroup } from 'rc-menu';
 import warning from 'warning';
+import isEqual from 'lodash.isequal';
 
 function noop() {}
 
@@ -424,7 +426,7 @@ export default class Select extends React.Component {
         if (maybe !== null) {
           label = maybe;
         }
-      } else if (getValuePropValue(child) === value) {
+      } else if (isEqual(getValuePropValue(child), value)) {
         label = this.getLabelFromOption(child);
       }
     });
@@ -895,6 +897,9 @@ export default class Select extends React.Component {
       );
 
       const childValue = getValuePropValue(child);
+
+      validateOptionValue(childValue, this.props);
+
       if (this.filterOption(inputValue, child)) {
         sel.push(
           <MenuItem
@@ -1022,7 +1027,7 @@ export default class Select extends React.Component {
               opacity,
             }}
           >
-            {value[0].label}
+            {String(value[0].label)}
           </div>
         );
       }
diff --git a/src/util.js b/src/util.js
index f64ec4a5c..0bcbb386f 100644
--- a/src/util.js
+++ b/src/util.js
@@ -23,6 +23,10 @@ export function getPropValue(child, prop) {
   return child.props[prop];
 }
 
+export function isMultiple(props) {
+  return props.multiple;
+}
+
 export function isCombobox(props) {
   return props.combobox;
 }
@@ -146,3 +150,15 @@ export function defaultFilterFn(input, child) {
     String(getPropValue(child, this.props.optionFilterProp)).indexOf(input) > -1
   );
 }
+
+export function validateOptionValue(value, props) {
+  if (isSingleMode(props) || isMultiple(props)) {
+    return;
+  }
+  if (typeof value !== 'string') {
+    throw new Error(
+      `Invalid \`value\` of type \`${typeof value}\` supplied to Option, ` +
+      `expected \`string\` when \`tags/combobox\` is \`true\`.`
+    );
+  }
+}
diff --git a/tests/Select.combobox.spec.js b/tests/Select.combobox.spec.js
index 9633f993a..f9f56ac26 100644
--- a/tests/Select.combobox.spec.js
+++ b/tests/Select.combobox.spec.js
@@ -4,11 +4,13 @@ import Select, { Option } from '../src';
 import { mount, render } from 'enzyme';
 import KeyCode from 'rc-util/lib/KeyCode';
 import allowClearTest from './shared/allowClearTest';
+import throwOptionValue from './shared/throwOptionValue';
 
 const delay = timeout => new Promise(resolve => setTimeout(resolve, timeout));
 
 describe('Select.combobox', () => {
   allowClearTest('combobox');
+  throwOptionValue('combobox');
 
   it('renders correctly', () => {
     const wrapper = render(
diff --git a/tests/Select.multiple.spec.js b/tests/Select.multiple.spec.js
index 1641ab3a9..917781d65 100644
--- a/tests/Select.multiple.spec.js
+++ b/tests/Select.multiple.spec.js
@@ -85,4 +85,20 @@ describe('Select.multiple', () => {
       );
     }).not.toThrow();
   });
+
+  it('allow non-string value', () => {
+    const handleChange = jest.fn();
+
+    const wrapper = mount(
+      <Select multiple defaultValue={[1]} onChange={handleChange}>
+        <Option value={1}>1</Option>
+        <Option value={2}>2</Option>
+      </Select>
+    );
+
+    wrapper.find('.rc-select').simulate('click');
+    wrapper.find('MenuItem').at(1).simulate('click');
+
+    expect(handleChange).toBeCalledWith([1, 2]);
+  });
 });
diff --git a/tests/Select.spec.js b/tests/Select.spec.js
index 898a7a915..cd537fbb9 100644
--- a/tests/Select.spec.js
+++ b/tests/Select.spec.js
@@ -707,4 +707,24 @@ describe('Select', () => {
     expect(handleChange).toBeCalledWith('2');
     expect(handleSelect).toBeCalledWith('2', expect.anything());
   });
+
+  it('allow non-string value', () => {
+    const handleChange = jest.fn();
+
+    const wrapper = mount(
+      <Select defaultValue={1} onChange={handleChange}>
+        <Option value={1}>1</Option>
+        <Option value={true}>2</Option>
+        <Option value={{ value: 3 }}>3</Option>
+      </Select>
+    );
+
+    wrapper.find('.rc-select').simulate('click');
+    wrapper.find('MenuItem').at(1).simulate('click');
+    expect(handleChange).toBeCalledWith(true);
+
+    wrapper.find('.rc-select').simulate('click');
+    wrapper.find('MenuItem').at(2).simulate('click');
+    expect(handleChange).toBeCalledWith({ value: 3 });
+  });
 });
diff --git a/tests/Select.tags.spec.js b/tests/Select.tags.spec.js
index 20cc8c79b..b1bb197ca 100644
--- a/tests/Select.tags.spec.js
+++ b/tests/Select.tags.spec.js
@@ -7,6 +7,7 @@ import allowClearTest from './shared/allowClearTest';
 import blurTest from './shared/blurTest';
 import renderTest from './shared/renderTest';
 import removeSelectedTest from './shared/removeSelectedTest';
+import throwOptionValue from './shared/throwOptionValue';
 
 jest.unmock('react-dom');
 
@@ -15,6 +16,7 @@ describe('Select.tags', () => {
   blurTest('tags');
   renderTest('tags');
   removeSelectedTest('tags');
+  throwOptionValue('tags');
 
   it('allow user input tags', () => {
     const wrapper = mount(
diff --git a/tests/shared/throwOptionValue.js b/tests/shared/throwOptionValue.js
new file mode 100644
index 000000000..0d0728b84
--- /dev/null
+++ b/tests/shared/throwOptionValue.js
@@ -0,0 +1,19 @@
+import React from 'react';
+import Select from '../../src/Select';
+import Option from '../../src/Option';
+import { mount } from 'enzyme';
+
+export default function throwOptionValue(mode) {
+  it('warn option value type', () => {
+    const render = () => mount(
+      <Select {...{ [mode]: true }} open>
+        <Option value={1}>1</Option>
+      </Select>
+    );
+
+    expect(render).toThrow(
+      'Invalid `value` of type `number` supplied to Option, ' +
+      'expected `string` when `tags/combobox` is `true`.'
+    );
+  });
+}