In Revit, I deleted rooms, but it still exist.
Could you tell me? How do delete this room or find list room exist in model.
In my model, it have 2 rooms, but in list room have 31 rooms.
Those are unplaced or redundant rooms. On dynamo you can identify them easily by their Area parameter value.
Create a Room Schedule with Room Name and Area. Any room that shows as “Not Placed” means it exists in the project definition but is not modeled anywhere - most likely it was modeled then deleted.