diff --git a/components/table/demo/row-selection-radio-props.md b/components/table/demo/row-selection-radio-props.md
index bcfbdc5069..bdb159529a 100644
--- a/components/table/demo/row-selection-radio-props.md
+++ b/components/table/demo/row-selection-radio-props.md
@@ -23,17 +23,17 @@ const columns = [{
   dataIndex: 'address'
 }];
 const data = [{
-  key: '1',
+  id: '1',
   name: '胡彦斌',
   age: 32,
   address: '西湖区湖底公园1号'
 }, {
-  key: '2',
+  id: '2',
   name: '胡彦祖',
   age: 42,
   address: '西湖区湖底公园1号'
 }, {
-  key: '3',
+  id: '3',
   name: '李大嘴',
   age: 32,
   address: '西湖区湖底公园1号'
@@ -56,6 +56,10 @@ const rowSelection = {
   }
 };
 
-ReactDOM.render(<Table rowSelection={rowSelection} columns={columns} dataSource={data} />
+function rowKey(record) {
+  return record.id;
+}
+
+ReactDOM.render(<Table rowSelection={rowSelection} rowKey={rowKey} columns={columns} dataSource={data} />
 , document.getElementById('components-table-demo-row-selection-radio-props'));
 ````
diff --git a/components/table/index.jsx b/components/table/index.jsx
index 2dce32bf3b..5f58d0d429 100644
--- a/components/table/index.jsx
+++ b/components/table/index.jsx
@@ -205,7 +205,7 @@ let AntTable = React.createClass({
     selectedRowKeys = [key];
     this.setState({
       selectedRowKeys: selectedRowKeys,
-      radioIndex: record.key,
+      radioIndex: key,
       selectionDirty: true
     });
     if (this.props.rowSelection.onSelect) {
@@ -271,13 +271,13 @@ let AntTable = React.createClass({
     }
     let checked;
     if (this.state.selectionDirty) {
-      checked = this.state.radioIndex === record.key;
+      checked = this.state.radioIndex === rowIndex;
     } else {
-      checked = (this.state.radioIndex === record.key ||
+      checked = (this.state.radioIndex === rowIndex ||
                  this.getDefaultSelection().indexOf(rowIndex) >= 0);
     }
     return <Radio disabled={props.disabled} onChange={this.handleRadioSelect.bind(this, record, rowIndex)}
-                  value={record.key} checked={checked}/>;
+                  value={rowIndex} checked={checked}/>;
   },
 
   renderSelectionCheckBox(value, record, index) {