diff --git a/packages/model3d-viewer/src/scene.ts b/packages/model3d-viewer/src/scene.ts
index 14decdc9e..440a57333 100644
--- a/packages/model3d-viewer/src/scene.ts
+++ b/packages/model3d-viewer/src/scene.ts
@@ -250,7 +250,12 @@ export async function createModel3dViewerScene(
     scene.environmentIntensity = ENVIRONMENT_INTENSITY;
   } catch {
     // 环境贴图只影响材质观感，取不到时退化为纯光照渲染。
-    roomEnvironment = null;
+    if (roomEnvironment) {
+      disposeModel3dViewerObject(roomEnvironment);
+      roomEnvironment = null;
+    }
+    pmremGenerator?.dispose();
+    pmremGenerator = null;
   }
 
   abortIfNeeded();