Psychological intervention of detainees in detention centers is an effective lubricant for public security supervision and court trials. It is a need to promote the improvement of China minor legal protection system, and a need to promote the integration of China judicial system with international standards. There are some ways to intervene in detainees, such as psychological consulation, psychological counseling and psychological training. The perfect countermeasures for psychological intervention of detainees in detention centers should should focus on the combination of the following four aspects: the combination of pre-case prevention and post-case intervention, the professionalization of psychological intervention forces and social socialization, the combination of full-time and part-time psychological intervention teams, and the combination of individual’s psychological intervention and family system grooming.