diff --git a/components/transfer/index.jsx b/components/transfer/index.jsx
index a2f8517ac8..3a739f3af9 100644
--- a/components/transfer/index.jsx
+++ b/components/transfer/index.jsx
@@ -23,7 +23,7 @@ class Transfer extends Component {
   splitDataSource() {
     const { targetKeys, dataSource } = this.props;
 
-    let leftDataSource = Object.assign([], dataSource);
+    let leftDataSource = [...dataSource];
     let rightDataSource = [];
 
     if (targetKeys.length > 0) {