Green finance refers to economic activities that support environmental improvement, climate change and efficient use of resources, that is, financial services provided for project investment and financing, project operation and risk management in the fields of environmental protection, energy conservation, clean energy, green transportation and green buildings.

In the face of extreme global climate change, the Paris Climate Conference in 20 15 reached an agreement to reduce emissions, and 195 countries unanimously agreed to control greenhouse gas emissions. In order to promote green development and support the demand of green industry and green finance for sustainable economic and social development, the People's Bank of China and the Development and Reform Commission jointly issued "Guiding Opinions on Building a Green Financial System" on August 3, 20 16, which opened a new era of green financial development in China.

According to the Guiding Opinions on Building a Green Financial System, green finance includes financial services such as project investment and financing, project operation and risk management in the fields of environmental protection, energy conservation, clean energy, green transportation and green buildings. Specific financial instruments include green credit, green bonds, green stock index and related products, green development fund, green insurance and carbon finance. On March 20 19, the National Development and Reform Commission issued the Green Industry Guidance Catalogue (Version 20 19) and its explanatory documents, which divided green industries into six categories: energy-saving and environmental protection industries, cleaner production industries, clean energy industries, eco-environmental protection industries, green upgrading of infrastructure and green services.