diff --git a/src/Body/BodyRow.tsx b/src/Body/BodyRow.tsx
index 34074c837..ba2b3615b 100644
--- a/src/Body/BodyRow.tsx
+++ b/src/Body/BodyRow.tsx
@@ -220,6 +220,7 @@ function BodyRow<RecordType extends { children?: RecordType[] }>(props: BodyRowP
           <BodyRow
             {...props}
             key={subKey}
+            rowKey={subKey}
             record={subRecord}
             recordKey={subKey}
             index={subIndex}
diff --git a/tests/__snapshots__/ExpandRow.spec.js.snap b/tests/__snapshots__/ExpandRow.spec.js.snap
index 07f50e80e..91b4b35c8 100644
--- a/tests/__snapshots__/ExpandRow.spec.js.snap
+++ b/tests/__snapshots__/ExpandRow.spec.js.snap
@@ -56,7 +56,7 @@ exports[`Table.Expand childrenColumnName 1`] = `
           </tr>
           <tr
             class="rc-table-row rc-table-row-level-1"
-            data-row-key="0"
+            data-row-key="2"
           >
             <td
               class="rc-table-cell rc-table-cell-with-append"
@@ -327,7 +327,7 @@ exports[`Table.Expand renders tree row correctly 1`] = `
           </tr>
           <tr
             class="rc-table-row rc-table-row-level-1"
-            data-row-key="0"
+            data-row-key="2"
           >
             <td
               class="rc-table-cell rc-table-cell-with-append"