diff --git a/lib/components/sphere_cloud.dart b/lib/components/sphere_cloud.dart
index 4569991..2b0472c 100644
--- a/lib/components/sphere_cloud.dart
+++ b/lib/components/sphere_cloud.dart
@@ -83,6 +83,7 @@ class _SphereCloudState extends State<SphereCloud> {
       projected.sort((a, b) => a.z.compareTo(b.z));
 
       return GestureDetector(
+        behavior: HitTestBehavior.opaque,
         onPanUpdate: (d) {
           // 你可以按手感调整系数
           setState(() {