In order to solve the problem of the slow development of prefabricated buildings, from the perspective of building industry chain, the behaviors of the three main bodies (the government, developers and manufacturer) in the current prefabricated building industry chain are analyzed. An evolutionary game model of "government-developers" and "developers-manufacturers" pairwise incentives are constructed, so as to obtain the optimal strategy of each main body. Through analysis, the stability and equilibrium of the game is closely related to the initial state of the system. Only when the government gives positive economic incentives, directly grants financial subsidies to developers, and developers actively cooperate with government policies to develop prefabricated buildings and share the costs of downstream manufacturers can the three parties achieve a win-win situation and promote the development of prefabricated buildings.