Abstract: Objective To discuss application of the Orem self-arrangement theory in whole nursing to old chronic psychopaths so as to promote their rehabilitation and improve their daily self - arrangement ability and social function. Methods Applied scale for assessing inpatients with psychosis provided by Tian Weicai (1990 year) and assessed these patients'rehabilitative effect by using the Orem self- arrangement theory. Results The rehabilitative effect had remarkable differences between before and after using the Orem self - arrangement theory. Conclusion Using the Orem seLf - arrangement theory could effectively help patients to recover self - arrangement ability, improve social function and slow down negative psychic symptoms.