In China, the government is not only responsible for the supply of local public facilities and services, but also the maker of public-private-partnership (PPP) policies and systems, and has a greater voice in PPP projects. The attitude and behavior of the government are essential to the sustainable development of PPP projects. This research focuses on the deep-seated connotation of the external attitude and behavior of the government, that is, the impact mechanism and path of the government’s relation orientation on project sustainability. First, enrich the connotation of the government’s relation orientation, project sustainability, and project governance, and improve the measurement scale. Then, construct a structural equation model, collect data through questionnaires, and explore the path of the government’s relation orientation on project sustainability. The research results show that: (1) different relation orientations have different effects on project governance and project sustainability, among which instrumental relation orientation and rent-seeking relation orientation will directly affect project sustainability; (2) relationship governance and contract governance play different mediating roles. The research results provide new ideas and perspectives for improving project governance mechanisms and project sustainability in the practice of PPP projects in China.

In recent years, the disorderly development of local government debt financing and local government financing platforms (GFP) in China has brought huge government debt risks. In order to control the debt increment caused by illegal financing of the GFP, the state has issued a series of documents. Under the new economic form, how to determine the position, choose the road, and plan the path of market-oriented development for high-quality economic development is critical to the GFP. This paper is committed to solving the key points and transformation paths of market-oriented transformation of the GFP. (1) On the basis of literature research, it analyzes the necessity, feasibility, and current transformation difficulties of market-oriented transformation of the GFP. (2) It defines the concept of the GFP and the concept of market-oriented transformation of the GFP. (3) It collates and analyzes the real cases of market-oriented transformation of four local government (county-level and above) financing platforms, studies the key points of transformation, and systematically summarizes the path of market-oriented transformation from three aspects: the goal, work plan, and implementation scheme of transformation and development. (4) Based on the idea of finding problems, diagnosing problems, optimizing, and improving, we put forward optimization strategy suggestions.