The two compulsory trainings are rotation training and combat training. Rotation training refers to the deployment of certain social forces, and through the rolling full coverage of practical training of "promoting training by war and training by war", the professional skills and practical ability of group prevention and treatment players are improved. The integration of war and training means that the police participating in the training, as the emergency mobile force of the public security organ, undertake specific practical tasks, embody the requirements of actual combat in training, and combine training with actual combat.