diff --git a/src/GraphicsSystem/CameraUpdateForIos.ts b/src/GraphicsSystem/CameraUpdateForIos.ts
index bed4c5489..3bab78e4b 100644
--- a/src/GraphicsSystem/CameraUpdateForIos.ts
+++ b/src/GraphicsSystem/CameraUpdateForIos.ts
@@ -18,6 +18,7 @@ export class CameraUpdateForIos
         {
             this.box = GetBox(app.Viewer.Scene);
             this.box.getBoundingSphere(this.boundingSphere);
+            this.boundingSphere.radius += 2000;//避免开门动画坏了
             this.Fix();
         };