The prevention of juvenile delinquency is one of the important issues related to the healthy growth of teenagers and social stability. The prevention of juvenile delinquency in District C of Beijing has achieved remarkable results. The district has established an organizational system，work network and various mechanisms for the prevention of juvenile delinquency，and the level of prevention of juvenile delinquency has been significantly improved. However，the prevention of juvenile delinquency is a work that requires perseverance and long-term perseverance，In a certain period of time in the future，the work should focus on further improving the organization system for the prevention of juvenile delinquency，further strengthening the prevention of family，school and society，and further improving the trinity of family，school and society.