PPP(Public-Private Partnership), also known as PPP mode, is a project operation mode in public infrastructure. Under this model, private enterprises and private capital are encouraged to cooperate with the government and participate in public infrastructure construction. Extended information According to this broad concept, PPP refers to the cooperation process between the public sector and the private sector of the government. In this process, the resources mastered by the non-public sector participate in the provision of public goods and services, thus achieving more favorable results for partners than expected when acting alone. Compared with BOT, the main characteristics of narrow sense PPP are that the government is more involved in the construction, management and operation process in the middle and late stage of the project, and enterprises are more involved in the scientific research and project establishment in the early stage of the project. Both the government and enterprises participate in the whole process, and the cooperation time between the two sides is longer and the information is more symmetrical.

PPP is the abbreviation of Public—Private Partnership, which means that in the field of public services, the government chooses social capital with investment and operation management capabilities in a competitive way, and the two parties conclude a contract on the principle of equal consultation, and the social capital provides public services, and the government pays consideration to the social capital according to the performance evaluation results of public services.