diff --git a/README.md b/README.md
index 97e2f0d0e..56b3b782e 100644
--- a/README.md
+++ b/README.md
@@ -90,6 +90,7 @@ React.render(c, container);
 |value | current selected option(s) | String/Array<String>/{key:String, label:React.Node}/Array<{key, label}> | - |
 |firstActiveValue | first active value when there is no value | String/Array<String> | - |
 |labelInValue| whether to embed label in value, see above value type | Bool | false |
+|backfill| whether backfill select option to search input (Only works in single and combobox mode) | Bool | false |
 |onChange | called when select an option or input value change(combobox) | function(value) | - |
 |onSearch | called when input changed | function | - |
 |onBlur | called when blur | function | - |
diff --git a/examples/combobox.js b/examples/combobox.js
index 523644f6b..d64437e3d 100644
--- a/examples/combobox.js
+++ b/examples/combobox.js
@@ -8,7 +8,7 @@ import 'rc-select/assets/index.less';
 class Demo extends React.Component {
   state = {
     disabled: false,
-    value: 'l',
+    value: '',
   };
 
   onChange = (value) => {
@@ -45,12 +45,12 @@ class Demo extends React.Component {
           style={{ width: 500 }}
           onChange={this.onChange}
           onSelect={this.onSelect}
-          defaultActiveFirstOption={false}
           notFoundContent=""
           allowClear
           placeholder="please select"
           value={this.state.value}
           combobox
+          backfill
         >
           <Option value="jack">
             <b style={{ color: 'red' }}>jack</b>
diff --git a/examples/single.js b/examples/single.js
index 93221468a..f2452a964 100644
--- a/examples/single.js
+++ b/examples/single.js
@@ -61,6 +61,7 @@ class Test extends React.Component {
             optionFilterProp="text"
             onChange={this.onChange}
             firstActiveValue="2"
+            backfill
           >
             <Option value="01" text="jack" title="jack">
               <b
diff --git a/package.json b/package.json
index 5f69148ea..9b60341f0 100644
--- a/package.json
+++ b/package.json
@@ -71,7 +71,7 @@
     "dom-scroll-into-view": "1.x",
     "prop-types": "^15.5.8",
     "rc-animate": "2.x",
-    "rc-menu": "5.x || 4.x",
+    "rc-menu": "^5.0.11",
     "rc-trigger": "1.x",
     "rc-util": "^4.0.4",
     "warning": "2.x"
diff --git a/src/DropdownMenu.jsx b/src/DropdownMenu.jsx
index 5f6085f81..36bf5f214 100644
--- a/src/DropdownMenu.jsx
+++ b/src/DropdownMenu.jsx
@@ -130,7 +130,8 @@ export default class DropdownMenu extends React.Component {
       }
 
       // clear activeKey when inputValue change
-      if (inputValue !== this.lastInputValue) {
+      const lastValue = value && value[value.length - 1];
+      if (inputValue !== this.lastInputValue && (!lastValue || !lastValue.backfill)) {
         activeKeyProps.activeKey = '';
       }
 
diff --git a/src/Select.jsx b/src/Select.jsx
index d336ce1bb..65cd48f26 100644
--- a/src/Select.jsx
+++ b/src/Select.jsx
@@ -68,6 +68,7 @@ export default class Select extends React.Component {
     optionFilterProp: 'value',
     optionLabelProp: 'value',
     notFoundContent: 'Not Found',
+    backfill: false,
   };
 
   constructor(props) {
@@ -237,7 +238,7 @@ export default class Select extends React.Component {
 
     if (state.open) {
       const menu = this.refs.trigger.getInnerMenu();
-      if (menu && menu.onKeyDown(event)) {
+      if (menu && menu.onKeyDown(event, this.handleBackfill)) {
         event.preventDefault();
         event.stopPropagation();
       }
@@ -249,6 +250,7 @@ export default class Select extends React.Component {
     const props = this.props;
     const selectedValue = getValuePropValue(item);
     const selectedLabel = this.getLabelFromOption(item);
+    const lastValue = value[value.length - 1];
     let event = selectedValue;
     if (props.labelInValue) {
       event = {
@@ -277,7 +279,7 @@ export default class Select extends React.Component {
           this.skipAdjustOpen = false;
         }, 0);
       }
-      if (value.length && value[0].key === selectedValue) {
+      if (lastValue && lastValue.key === selectedValue && !lastValue.backfill) {
         this.setOpenState(false, true);
         return;
       }
@@ -589,8 +591,32 @@ export default class Select extends React.Component {
     }
   };
 
+  handleBackfill = (item) => {
+    if (!this.props.backfill || !(isSingleMode(this.props) || isCombobox(this.props))) {
+      return;
+    }
+
+    const key = getValuePropValue(item);
+    const label = this.getLabelFromOption(item);
+    const backfillValue = {
+      key,
+      label,
+      backfill: true,
+    };
+
+    if (isCombobox(this.props)) {
+      this.setInputValue(key, false);
+    }
+
+    this.setState({
+      value: [backfillValue],
+    });
+  };
+
   filterOption = (input, child, defaultFilter = defaultFilterFn) => {
-    if (!input) {
+    const { value } = this.state;
+    const lastValue = value[value.length - 1];
+    if (!input || (lastValue && lastValue.backfill)) {
       return true;
     }
     let filterFn = this.props.filterOption;
diff --git a/tests/Select.combobox.spec.js b/tests/Select.combobox.spec.js
index 651dbd660..9633f993a 100644
--- a/tests/Select.combobox.spec.js
+++ b/tests/Select.combobox.spec.js
@@ -2,6 +2,7 @@
 import React from 'react';
 import Select, { Option } from '../src';
 import { mount, render } from 'enzyme';
+import KeyCode from 'rc-util/lib/KeyCode';
 import allowClearTest from './shared/allowClearTest';
 
 const delay = timeout => new Promise(resolve => setTimeout(resolve, timeout));
@@ -195,4 +196,47 @@ describe('Select.combobox', () => {
       });
     });
   });
+
+  it('backfill', () => {
+    const handleChange = jest.fn();
+    const handleSelect = jest.fn();
+    const wrapper = mount(
+      <Select
+        combobox
+        backfill
+        open
+        onChange={handleChange}
+        onSelect={handleSelect}
+      >
+        <Option value="One">One</Option>
+        <Option value="Two">Two</Option>
+      </Select>
+    );
+
+    const input = wrapper.find('input');
+
+    input.simulate('keyDown', { keyCode: KeyCode.DOWN });
+
+    expect(wrapper.state().value).toEqual([
+      {
+        key: 'Two',
+        label: 'Two',
+        backfill: true,
+      },
+    ]);
+    expect(wrapper.state().inputValue).toBe('Two');
+    expect(handleChange).not.toBeCalled();
+    expect(handleSelect).not.toBeCalled();
+
+    input.simulate('keyDown', { keyCode: KeyCode.ENTER });
+
+    expect(wrapper.state().value).toEqual([
+      {
+        key: 'Two',
+        label: 'Two',
+      },
+    ]);
+    expect(handleChange).toBeCalledWith('Two');
+    expect(handleSelect).toBeCalledWith('Two', expect.anything());
+  });
 });
diff --git a/tests/Select.spec.js b/tests/Select.spec.js
index 740f6e4bd..aadde1ab9 100644
--- a/tests/Select.spec.js
+++ b/tests/Select.spec.js
@@ -630,4 +630,46 @@ describe('Select', () => {
 
     expect(wrapper).toMatchSnapshot();
   });
+
+  it('backfill', () => {
+    const handleChange = jest.fn();
+    const handleSelect = jest.fn();
+    const wrapper = mount(
+      <Select
+        backfill
+        open
+        onChange={handleChange}
+        onSelect={handleSelect}
+        optionLabelProp="children"
+      >
+        <Option value="1">One</Option>
+        <Option value="2">Two</Option>
+      </Select>
+    );
+
+    const input = wrapper.find('input');
+
+    input.simulate('keyDown', { keyCode: KeyCode.DOWN });
+
+    expect(wrapper.state().value).toEqual([
+      {
+        key: '2',
+        label: 'Two',
+        backfill: true,
+      },
+    ]);
+    expect(handleChange).not.toBeCalled();
+    expect(handleSelect).not.toBeCalled();
+
+    input.simulate('keyDown', { keyCode: KeyCode.ENTER });
+
+    expect(wrapper.state().value).toEqual([
+      {
+        key: '2',
+        label: 'Two',
+      },
+    ]);
+    expect(handleChange).toBeCalledWith('2');
+    expect(handleSelect).toBeCalledWith('2', expect.anything());
+  });
 });