The first part is the research on the theory and mode of infrastructure project financing. This part studies and analyzes the latest theories and models of infrastructure investment and financing at home and abroad. The second part, the investment and financing risk research of municipal infrastructure projects. This part studies the classification, measurement and control of investment and financing risks of urban infrastructure projects by combining qualitative and quantitative methods. The third part is a typical case analysis of investment and financing of infrastructure projects at home and abroad. Through the analysis of typical cases, this paper summarizes the experience and lessons of investment and financing operation of infrastructure projects at home and abroad. The fourth part, the research on the present situation and problems of investment and financing risk management of municipal infrastructure in China. This part focuses on the historical evolution and development status of China's urban infrastructure investment and financing system. The fifth part, the development countermeasures and suggestions of investment and financing mode of municipal infrastructure in China. This part systematically puts forward some countermeasures and suggestions to actively expand the investment and financing channels of municipal infrastructure in China and effectively prevent the investment and financing risks of infrastructure.

The innovation of this research topic

1. The latest theories and modes of infrastructure investment and financing at home and abroad are systematically studied. Based on the analysis of typical cases at home and abroad, the characteristics of various models and the scientific and feasible popularization and implementation in China are studied.

2. This paper systematically studies the development status and existing problems in the field of urban infrastructure investment and financing in China, analyzes the financial constraints that restrict the development of urban infrastructure construction in China, and puts forward targeted policy suggestions.

3. According to the different economic intensity of China's urban infrastructure and the basic principles of economics, this paper makes a systematic and scientific classification, which provides a solid theoretical basis for the market-oriented reform of China's urban infrastructure investment and financing model.

Theoretical and practical significance of this research topic.

In recent years, with the rapid development of social economy, China has entered the stage of accelerated urbanization. Research shows that every time the urban population doubles, the urban area needs to double, which leads to a huge demand gap for urban infrastructure. For a long time, a single government investment model has led to insufficient investment in urban infrastructure in China, which has seriously restricted the sustainable development of cities in China. It is of great theoretical and practical significance to study the new investment and financing mode of urban infrastructure, expand the investment and financing channels of urban infrastructure and increase the effective supply of urban infrastructure, which is the content of this topic!