diff --git a/src/Add-on/ShareView/ShareViewCameraControl.ts b/src/Add-on/ShareView/ShareViewCameraControl.ts
index 3ce531c5e..c53ca0f6c 100644
--- a/src/Add-on/ShareView/ShareViewCameraControl.ts
+++ b/src/Add-on/ShareView/ShareViewCameraControl.ts
@@ -84,13 +84,16 @@ export class ShareViewCameraControl extends CameraControls
                         {
                             // ShareView中用更改FOV的方式替换原有的透视相机缩放逻辑（CameraControl难以重写）
                             this.Viewer.CameraControl.Fov = clamp(this.Viewer.CameraControl.Fov * scale, this.minFov, this.maxFov);
-                            if (screen.orientation.type.startsWith("portrait"))
+                            if (screen.orientation)
                             {
-                                this.shareViewStore.userFovPortrait = scale;
-                            }
-                            else if (screen.orientation.type.startsWith("landscape"))
-                            {
-                                this.shareViewStore.userFovLandscape = scale;
+                                if (screen.orientation.type.startsWith("portrait"))
+                                {
+                                    this.shareViewStore.userFovPortrait = scale;
+                                }
+                                else if (screen.orientation.type.startsWith("landscape"))
+                                {
+                                    this.shareViewStore.userFovLandscape = scale;
+                                }
                             }
                         }
                         else
diff --git a/src/Add-on/ShareView/components/HouseRoamingButton.tsx b/src/Add-on/ShareView/components/HouseRoamingButton.tsx
index e07dff6c9..45e6da9e5 100644
--- a/src/Add-on/ShareView/components/HouseRoamingButton.tsx
+++ b/src/Add-on/ShareView/components/HouseRoamingButton.tsx
@@ -66,6 +66,7 @@ function HouseRoamingButton()
         shareViewStore.userFovLandscape = defaultFovLandscape;
         function initFov()
         {
+            if (!screen.orientation) return;
             if (screen.orientation.type.startsWith("portrait"))
                 shareViewApp.Viewer.CameraCtrl.Fov = shareViewStore.userFovPortrait;
             else if (screen.orientation.type.startsWith("landscape"))