Abstract: Objective: To investigate the incidence rate of self-image disorder in breast cancer patients who under mastectomy.Methods: One hundrend and two patients with breast cancer were surveyed with self-designed questionnaires.The relations between the occurrrence of self-image disorder and the patients' age,education level and urban and rural areas were analyzed,and the nursing and interference were applied accordingly.Results: The incidence of self-image disorder increased in accordiance with the patients' education level but decreased with the rise of age.The incidence occurred more often in urban patients than in rural ones(P<0.01 to P<0.005).Conclusions: Self-image disorder often occurs in young patients,patients with higher education level and urban patients.More care and interference should be given to them,which is of great value for the prognosis of patients with breast cancer.