diff --git a/packages/vant/src/uploader/Uploader.tsx b/packages/vant/src/uploader/Uploader.tsx
index 7929cdefb..09c8a3498 100644
--- a/packages/vant/src/uploader/Uploader.tsx
+++ b/packages/vant/src/uploader/Uploader.tsx
@@ -74,7 +74,7 @@ const uploaderProps = {
     Numeric | [Numeric, Numeric]
   >,
   previewImage: truthProp,
-  previewOptions: Object as PropType<ImagePreviewOptions>,
+  previewOptions: Object as PropType<Partial<ImagePreviewOptions>>,
   previewFullImage: truthProp,
   maxSize: {
     type: [Number, String, Function] as PropType<UploaderMaxSize>,