diff --git a/components/table/Table.tsx b/components/table/Table.tsx
index 4c69b6e8ab..41deb248a8 100755
--- a/components/table/Table.tsx
+++ b/components/table/Table.tsx
@@ -560,7 +560,7 @@ export default class Table<T> extends React.Component<TableProps<T>, any> {
     warning(recordKey !== undefined,
       'Each record in table should have a unique `key` prop, or set `rowKey` to an unique primary key.'
     );
-    return recordKey;
+    return recordKey === undefined ? index : recordKey;
   }
 
   renderRowSelection() {