diff --git a/components/table/style/index.less b/components/table/style/index.less
index 42d8f0f9f7..942b9bc5e8 100644
--- a/components/table/style/index.less
+++ b/components/table/style/index.less
@@ -166,6 +166,8 @@
 
   // =========================== Summary ============================
   &-summary {
+    position: relative;
+    z-index: @zindex-table-fixed;
     background: @table-bg;
 
     div& {