diff --git a/api/app/controllers/ontology_secondary_routes.py b/api/app/controllers/ontology_secondary_routes.py
index 2aea77a4..8720065b 100644
--- a/api/app/controllers/ontology_secondary_routes.py
+++ b/api/app/controllers/ontology_secondary_routes.py
@@ -636,6 +636,7 @@ async def classes_handler(
             scene_id=scene_uuid,
             scene_name=scene.scene_name,
             scene_description=scene.scene_description,
+            is_system_default=scene.is_system_default,
             items=items
         )
         
diff --git a/api/app/repositories/ontology_scene_repository.py b/api/app/repositories/ontology_scene_repository.py
index 141b5d1c..0b357e41 100644
--- a/api/app/repositories/ontology_scene_repository.py
+++ b/api/app/repositories/ontology_scene_repository.py
@@ -374,7 +374,7 @@ class OntologySceneRepository:
             
             count = self.db.query(OntologyScene).filter(
                 OntologyScene.scene_id == scene_id,
-                OntologyScene.workspace_id == workspace_id
+                (OntologyScene.workspace_id == workspace_id) | (OntologyScene.is_system_default == True)
             ).count()
             
             is_owner = count > 0
diff --git a/api/app/schemas/ontology_schemas.py b/api/app/schemas/ontology_schemas.py
index 718c54eb..905e65fe 100644
--- a/api/app/schemas/ontology_schemas.py
+++ b/api/app/schemas/ontology_schemas.py
@@ -463,6 +463,7 @@ class ClassListResponse(BaseModel):
     scene_id: UUID = Field(..., description="所属场景ID")
     scene_name: str = Field(..., description="场景名称")
     scene_description: Optional[str] = Field(None, description="场景描述")
+    is_system_default: bool = Field(False, description="是否为系统默认场景")
     items: List[ClassResponse] = Field(..., description="类型列表")