If we considered the psychological status of a person, the environment of the person is very affective on that particular person’s mental health. If some one is working within an artificial environment for a long time period of the day, there is a psychological stress too. If he can see and feel the beauty of the natural environment for a while he can get rid of the stress really. Because of the natural environment has the ability to reduce the psychological stress of a person. So this thing is one of a biggest value of natural environment.