diff --git a/packages/vantui/src/popup/index.tsx b/packages/vantui/src/popup/index.tsx
index f0dde21a..ed5f58cb 100644
--- a/packages/vantui/src/popup/index.tsx
+++ b/packages/vantui/src/popup/index.tsx
@@ -125,6 +125,7 @@ export function Popup(props: PopupProps) {
     overlay = true,
     lockScroll = true,
     overlayStyle,
+    overlayClassName,
     closeOnClickOverlay = true,
     onClickOverlay,
     onClose,
@@ -152,6 +153,7 @@ export function Popup(props: PopupProps) {
             show={show}
             zIndex={zIndex}
             style={overlayStyle}
+            className={overlayClassName}
             duration={duration}
             onClick={_onClickOverlay}
             lockScroll={lockScroll}
diff --git a/packages/vantui/types/popup.d.ts b/packages/vantui/types/popup.d.ts
index 68bbcf0f..d5a9dd7a 100644
--- a/packages/vantui/types/popup.d.ts
+++ b/packages/vantui/types/popup.d.ts
@@ -19,6 +19,10 @@ export interface PopupProps extends TransitionProps, ViewProps, OverlayProps {
    * @description 自定义遮罩层样式
    */
   overlayStyle?: string | CSSProperties
+  /**
+   * @description 自定义遮罩层样式类
+   */
+  overlayClassName?: string
   /**
    * @description 执行
    */