Objective To explore the related risk factors of suicidal behaviorsin the patients withsevere psychoses. Methods 80 cases of patients with severe psychoses were divided into two groups according to their suicide attemptsatadmission,with 59 cases of no suicide and 21 cases of attempted suicide. The general information questionnaire,brief psychiatric rating scale( BPRS),coping style questionnaire( CSQ),social disability screening schedule( SDSS) and social support rating scale( SSRS) were used to separately i...