The existing research on aviation equipment support lacks the exploration of the influencing factors of military civilian cooperative support strategy selection. Based on the limited rationality，the evolutionary game model of cooperative support between local aviation enterprises（institutions）and military aviation equipment users based on knowledge sharing with the participation of the Equipment Development Department is constructed. With the participation of the Equipment Development Department，the strategy selection of aviation equipment cooperative support between the military and the civilian is analyzed，and the numerical simulation analysis of the tripartite strategy selection is carried out on the basis of the theoretical model. The results show that the initial willingness of the equipment development department，policy-making，capital investment，the cost and benefit coefficient of military and civilian cooperative support in the context of knowledge sharing，the opportunity benefit of one party and the degree of penalty for breach of contract have an important impact on the strategic choice of civil-military cooperative support.