diff --git a/packages/sheets-conditional-formatting-ui/src/components/panel/rule-list/index.module.less b/packages/sheets-conditional-formatting-ui/src/components/panel/rule-list/index.module.less
index ef00837ba81..ceac91747c1 100644
--- a/packages/sheets-conditional-formatting-ui/src/components/panel/rule-list/index.module.less
+++ b/packages/sheets-conditional-formatting-ui/src/components/panel/rule-list/index.module.less
@@ -133,5 +133,5 @@
     }
 }
 :global .react-grid-item.react-grid-placeholder {
-    background: rgb(var(--grey-300));
+    background: rgb(var(--grey-300)) !important;
 }