Abstract: Objective To explore the characteristics and return of cases without psychosis in forensic psychiatry. Methods Seventy four cases without psychosis were follow up researched,and statistics relevant data. Results Five point seven percent cases were diagnosed without psychosis.They had explicit motive and purpose, protect by one′s own was good,"the psychotic symptom" disappears after authenticate. Conclusion analysis of many factor contribute to authenticate cases without psychosis.That schizophrenia symptom in early days should be identified to prevent from the misdiagnosis.

Key words: psychiatry, forensic expertise, without psychosis