Abstract:In order to better promote the construction of PPP project of ecological poverty alleviation, this paper analyzes the dynamic evolution path of government and social capital party's strategy selection by constructing evolutionary game model. The research finds that the factors which decide the evolutionary game’ stable state in the ecological poverty alleviation PPP project, is the size of the social capital side to obtain the bottom-earning income and the spillover benefits. In addition, the trade-off between the government's acquired ecological benefits and the benefits of poverty alleviation and subsidy costs will also affect the stable state of the game. Therefore, the article believes that it is necessary to develop projects that enable social capital to obtain stable returns, such as eco-industrial projects, to meet the profit-seeking nature of social capital while also taking into account the effects of ecological poverty alleviation.