This paper is guided by the State Council's "New Energy Vehicle Industry Development Plan", under the background of "subsidy decline", through the tripartite evolutionary game model of the government, enterprises and consumers, to analyze the strategic choices of government subsidies, enterprise production and consumer purchases , revealing the evolution process of enterprise production and consumer purchasing strategy choice behavior under different subsidy and supervision methods, and analyzing the evolution process and results by means of simulation, and finally discovering the connection between enterprises, government and consumers, thus It has reference significance for the policy making of the new energy vehicle industry to continue to develop in the direction of independence and health.