At present, there are two main channels for funds and insurance to participate in PPP projects: one is to form a consortium with the construction unit to participate in the bidding of PPP projects and become one of the social capital parties of PPP projects. The construction unit is responsible for the project, and the fund or insurance unit is responsible for providing financial support, thus directly participating in the project implementation to obtain benefits; The second is to sign a financing contract with the successful PPP project construction unit, distribute financing funds to it, and indirectly participate in PPP project construction.