diff --git a/packages/vant/test/demo.ts b/packages/vant/test/demo.ts
index 459e9ce69..b0722d1e5 100644
--- a/packages/vant/test/demo.ts
+++ b/packages/vant/test/demo.ts
@@ -28,6 +28,7 @@ export function snapshotDemo(Demo: any, option: any = {}) {
           'demo-block': EmptyComponent,
         },
       },
+      attachTo: document.body,
     });
 
     await later();