Study on the coupling coordination mechanism of green technology innovation, environmental regulation, and green finance.

Green technology innovation is the basic driving force of green economic development. The compatibility of the composite system composed of green technology innovation, green finance, and environmental regulation is the decisive factor of whether regional economy can achieve sustainable development. Based on the data of regional green technology innovation in China from 2012 to 2020, this paper discusses the coupling coordination mechanism and coupling coordination level among green technology innovation, green finance, and environmental regulation based on entropy method. It is found that the coupling and coordinated development of regional green technology innovation-green finance-environmental regulation system in China is above medium level. However, there is a big gap in the coupling coordination level among different regions. The coupling coordination level in eastern China is relatively high, and the coupling coordination level in other regions is deviated. Most regions of China have a great potential for improvement. On this basis, this paper puts forward policy suggestions for improving the overall coupling and coordination level of the system to promote national green development.