摘要:In order to improve the quality and efficiency of water pollution prevention and control project, the State encouraged social capital to participate in water pollution prevention and control PPP projects. But there are some problems in the field, including a low rate of return on investment, the imperfect investment environment and so on which hinder the participation of social capital in these PPP projects. So we need to perfect the social capital investment return mechanism, and establish a fair and safe investment environment and take other measures.