diff --git a/packages/react-modal/src/style/index.less b/packages/react-modal/src/style/index.less
index 9658824346..d2e24710ec 100644
--- a/packages/react-modal/src/style/index.less
+++ b/packages/react-modal/src/style/index.less
@@ -1,7 +1,7 @@
 @modal: ~'w-modal';
 
 .@{modal} {
-  z-index: 990;
+  z-index: 1001;
   &-inner {
     padding-bottom: 20px;
     background: #f9f9f9;
diff --git a/packages/react-overlay-trigger/src/index.tsx b/packages/react-overlay-trigger/src/index.tsx
index bfc6957ef8..a0c9fb1039 100644
--- a/packages/react-overlay-trigger/src/index.tsx
+++ b/packages/react-overlay-trigger/src/index.tsx
@@ -97,7 +97,7 @@ export default React.forwardRef<OverlayTriggerRef, OverlayTriggerProps>((props,
     ...other
   } = props;
 
-  const zIndex = useRef<number>(990);
+  const zIndex = useRef<number>(999);
   const triggerRef = useRef<HTMLElement>();
   const popupRef = useRef<HTMLElement>();
   const timeoutRef = useRef<number[]>([]);