Abstract: As one of the three major battles in China, pollution prevention and control will lead to a trillion-dollar investment space.At present, environmental PPP is concentrated in the field of stable profit returns, and the PPP model has a good research value in the application of low-profit projects.Taking the mine abandoned land management as an example, this paper mainly discusses the cooperation mechanism of core stakeholders in the PPP model, constructs the “local government-social capital” evolutionary game model and uses Matlab software for numerical simulation analysis.The results show that under the condition that both parties have strong environmental awareness, low government supervision costs, and cooperation between the two sides to obtain income, the evolution of the two subjects tends to be a win-win situation.Finally, the article proposes three suggestions:establishing a long-term governance mechanism and a reasonable income mechanism, strengthening the punishment for violations, and absorbing third-party forces to reduce supervision costs and improve supervision efficiency.