Abstract:Abstract: The establishment of an effective ecological compensation mechanism is an important guarantee for coordinating the interests of all parties in the regional air pollution joint prevention and control. The evolutionary game model is used to analyze the interrelationships and effects of various benefit parameters that affect regional joint prevention and control strategies. The strategic choices and evolution directions of the two major game players, the central government and regional local governments, are discussed. The evolution of the game system is verified by simulation, taking the Beijing-Tianjin-Hebei region as an example. Then the system dynamics model is used to simulate the influence of the main benefit parameters on the equilibrium result of the game system. The results show that the implementation of the central government's compensation policy directly affects the Beijing-Tianjin-Hebei local government's joint prevention and control decisions. Therefore, an effective and sound ecological compensation mechanism needs to be established by effectively allocating compensation amounts, reducing the cost of joint prevention and control of local governments, improving the efficiency of supervision, and strengthening the penalties of local governments for not actively implementing policies, etc. Effective ecological compensation policies encourage regional local governments to adopt air pollution joint prevention and control strategies, thereby effectively accelerate the governance process.