diff --git a/examples/demos/demo1.js b/examples/demos/demo1.js
index f82ab5a..2f81775 100644
--- a/examples/demos/demo1.js
+++ b/examples/demos/demo1.js
@@ -1,8 +1,6 @@
 import React, { Component } from 'react';
 import ListBox from '../../src';
 
-const { ListItem, ListItemGroup } = ListBox
-
 const dataset = [];
 
 var uuid = 100;
diff --git a/lib/ListBox.js b/lib/ListBox.js
index e938222..dcfbd3d 100644
--- a/lib/ListBox.js
+++ b/lib/ListBox.js
@@ -472,9 +472,7 @@ function (_React$Component) {
 
       var _this$props7 = this.props,
           className = _this$props7.className,
-          value = _this$props7.value,
           prefixCls = _this$props7.prefixCls,
-          items = _this$props7.items,
           width = _this$props7.width,
           height = _this$props7.height,
           tabIndex = _this$props7.tabIndex,
@@ -503,9 +501,7 @@ function (_React$Component) {
         style.height = height;
       }
 
-      var classes = (0, _classnames.default)((_classNames = {}, (0, _defineProperty2.default)(_classNames, "".concat(prefixCls), true), (0, _defineProperty2.default)(_classNames, className, className), (0, _defineProperty2.default)(_classNames, "".concat(prefixCls, "-disabled"), disabled), _classNames)); // scrollViewBodyCls={`${prefixCls}-body`}
-      // scrollViewBodyStyle={scrollViewBodyStyle}
-
+      var classes = (0, _classnames.default)((_classNames = {}, (0, _defineProperty2.default)(_classNames, "".concat(prefixCls), true), (0, _defineProperty2.default)(_classNames, className, className), (0, _defineProperty2.default)(_classNames, "".concat(prefixCls, "-disabled"), disabled), _classNames));
       return _react.default.createElement(WrapperComponent, {
         ref: this.saveListView,
         tabIndex: tabIndex,
diff --git a/lib/ListItem.js b/lib/ListItem.js
index 1985256..d2726f9 100644
--- a/lib/ListItem.js
+++ b/lib/ListItem.js
@@ -70,9 +70,6 @@ function (_React$Component) {
         onDeselect && onDeselect(item, itemDOM);
       }
     });
-    (0, _defineProperty2.default)((0, _assertThisInitialized2.default)((0, _assertThisInitialized2.default)(_this)), "saveItem", function (dom) {
-      _this.node = dom;
-    });
     return _this;
   }
 
@@ -81,11 +78,6 @@ function (_React$Component) {
     value: function shouldComponentUpdate(nextProps, nextState) {
       return !(0, _shallowequal.default)(this.props, nextProps) || !(0, _shallowequal.default)(this.state, nextState);
     }
-  }, {
-    key: "getItemDOM",
-    value: function getItemDOM() {
-      return this.node;
-    }
   }, {
     key: "render",
     value: function render() {
@@ -100,7 +92,6 @@ function (_React$Component) {
           onMouseLeave = _this$props2.onMouseLeave;
       var classes = (0, _classnames.default)((_classNames = {}, (0, _defineProperty2.default)(_classNames, "".concat(prefixCls), true), (0, _defineProperty2.default)(_classNames, "".concat(prefixCls, "-selected"), selected), (0, _defineProperty2.default)(_classNames, "".concat(prefixCls, "-disabled"), disabled), _classNames));
       return _react.default.createElement("div", {
-        ref: this.saveItem,
         className: classes,
         onClick: this.handleItemClick,
         onMouseEnter: onMouseEnter,
diff --git a/lib/index.js b/lib/index.js
index ead0b41..6a5dc7a 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -6,33 +6,9 @@ var _interopRequireDefault = require("@babel/runtime-corejs2/helpers/interopRequ
 Object.defineProperty(exports, "__esModule", {
   value: true
 });
-Object.defineProperty(exports, "ListBox", {
-  enumerable: true,
-  get: function get() {
-    return _ListBox.default;
-  }
-});
-Object.defineProperty(exports, "ListItem", {
-  enumerable: true,
-  get: function get() {
-    return _ListItem.default;
-  }
-});
-Object.defineProperty(exports, "ListItemGroup", {
-  enumerable: true,
-  get: function get() {
-    return _ListItemGroup.default;
-  }
-});
 exports.default = void 0;
 
 var _ListBox = _interopRequireDefault(require("./ListBox"));
 
-var _ListItem = _interopRequireDefault(require("./ListItem"));
-
-var _ListItemGroup = _interopRequireDefault(require("./ListItemGroup"));
-
-_ListBox.default.ListItemGroup = _ListItemGroup.default;
-_ListBox.default.ListItem = _ListItem.default;
 var _default = _ListBox.default;
 exports.default = _default;
\ No newline at end of file
diff --git a/src/ListBox.js b/src/ListBox.js
index 2626f29..a4aa66c 100644
--- a/src/ListBox.js
+++ b/src/ListBox.js
@@ -490,9 +490,7 @@ export default class ListBox extends React.Component {
     render() {
         const {
             className,
-            value,
             prefixCls,
-            items,
             width,
             height,
             tabIndex,
@@ -524,9 +522,6 @@ export default class ListBox extends React.Component {
             [`${prefixCls}-disabled`]: disabled,
         });
 
-        // scrollViewBodyCls={`${prefixCls}-body`}
-        // scrollViewBodyStyle={scrollViewBodyStyle}
-
         return (
             <WrapperComponent
                 ref={this.saveListView}
diff --git a/src/ListItem.js b/src/ListItem.js
index bec0475..552c54e 100644
--- a/src/ListItem.js
+++ b/src/ListItem.js
@@ -46,14 +46,6 @@ export default class ListItem extends React.Component {
         }
     }
 
-    saveItem = (dom) => {
-        this.node = dom;
-    }
-
-    getItemDOM() {
-        return this.node;
-    }
-
     render() {
         const { prefixCls, disabled, selected, children, onMouseEnter, onMouseLeave } = this.props;
         const classes = classNames({
@@ -63,7 +55,6 @@ export default class ListItem extends React.Component {
         });
 
         return <div
-            ref={this.saveItem}
             className={classes}
             onClick={this.handleItemClick}
             onMouseEnter={onMouseEnter}
diff --git a/src/index.js b/src/index.js
index 718ffbf..8ff244e 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,14 +1,3 @@
 import ListBox from './ListBox';
-import ListItem from './ListItem';
-import ListItemGroup from './ListItemGroup';
-
-export {
-    ListBox,
-    ListItem,
-    ListItemGroup
-}
-
-ListBox.ListItemGroup = ListItemGroup;
-ListBox.ListItem = ListItem;
 
 export default ListBox;