Objective To investigate the prediction methods for aggressive behavior in hospitalized mental patients,implement predictability care,and reduce or even avoid the occurrence of aggressive behavior,Methods The psychosis-associated factors of hospitalized psychiatric patients in 2006 were collected,and analyzed by the method of Logistic regression,in order to find out the factors with predicting significance.And then,the aggressive behavior of patients who were admitted and final diagnosed in 2007 were predicted,and the patient with the risk factors of aggressive behavior were focus care in intervention group.The incidence of aggressive behavior,false positive rate and false negative rate of both intervention and control group were compared.Result According to the Logistic regression analysis,five factors were selected at the level of α= 0.05,including the past history of aggressive behavior,EPQ-N,hostile suspicion (HOST),activated (ACTV) and killings of paranoia.In the intervention group,the incidence rate of attacks was 12.5%,while the control group was 32.7%,which showed significant difference (P＜0.01).The false positive rate of intervention group was 21.60%,while the control group was 14.09%,which also showed significant difference (P ＜0.05).Conclusion Aggressive behavior of hospitalized psychiatric patients can be predicted.Establish friendly relationship with the patients,respect and meet the various needs of patients can help to reduce and eliminate psychiatric inpatients' attacks.