With development of immersive projection technique, display quality is worth to perform practical use.On the other hand, we need to interact with the displayed contents freely for effective task in immersive environments.We consider that natural interaction between the user and the virtual objects can be achieved by intuitive motions of body parts including hands and fingers to operate objects directly as we do in daily life.In this paper, we propose the intuitive interface which enables users to operate virtual environments using body action recognized by motion capture system.