Psychomotor agitation is a series of unintentional and purposeless motions that stem from mental tension of an individual, or relating to movement or muscular activity associated with mental processes, especially affects, as in psychomotor slowing associated with depression. We can observe at autistic children some psychomotor retardation. It is really necessary to work correctly with them. The behavior approach is essential. Many studies and our experimental work shows that if we pay more attention to development of psychomotor, we can get better results on developing such areas as logical thinking and communication.