As an essential way to promote ecological civilization, green finance is attracting wide attention. However, whether green finance can effectivelysuccessfully regulate the green technology innovation effect of heterogeneous environmental regulations and boost green technology innovation in coordination with heterogeneous environmental regulations remains unclear. Based on the re-measurement of the green finance development index of various provinces and cities in China, this study uses the spatial Durbin model to test the above problems empirically. The results show that green finance and “market incentive” environmental regulations can promote regional green technology innovation, while “command and control” environmental regulations inhibit regional green technology innovation. Green finance plays a negative regulatory role in the mechanism of heterogeneous environmental regulations affecting green technology innovation. Green finance alleviates the negative impact of “command and control” environmental regulations on green technology innovation and weakens the positive impact of “market-incentive” environmental regulations on green technology innovation. In terms of spillover effects, green finance can effectively promote green technology innovation in neighboring regions, while heterogeneous environmental regulations have a crowding-out effect on green technology innovation in neighboring regions.

Effectively identifying the role and mechanism of green finance in environmental governance provides an important guarantee that green finance serves the ecological environment. Based on the panel data of 30 provinces in China from 2001 to 2015, this paper explores the impact of green finance on cleaner industrial production and end-ofpipe treatment and further reveals the mediating effect of industrial structure optimization and the moderating effect of environmental regulation. The results show that (1) China's cleaner industrial production performance, end-of-pipe treatment performance and systematic governance performance show a clear upwards trend, and the endof-pipe treatment performance was generally better than the cleaner production performance. (2) Green finance promotes cleaner production performance but inhibits end-of-pipe treatment performance. The optimization of industrial structure plays a partial intermediary role in the impact of green finance on cleaner production and end-of-pipe treatment. (3) Both "market-incentive" and "commandand-control" environmental regulations weaken the positive impact of green finance on cleaner production; "market-incentive" environmental regulation alleviates the negative impact of green finance on end-ofpipe treatment, while the moderating effect of "command-and-control" environmental regulation on end-of-pipe treatment is not significant.

Effectively identifying the role and mechanism of green finance in environmental governance provides an important guarantee that green finance serves the ecological environment. Based on the panel data of 30 provinces in China from 2001 to 2015, this paper explores the impact of green finance on cleaner industrial production and end-of-pipe treatment and further reveals the mediating effect of industrial structure optimization and the moderating effect of environmental regulation. The results show that (1) China's cleaner industrial production performance, end-of-pipe treatment performance and systematic governance performance show a clear upwards trend, and the end-of-pipe treatment performance was generally better than the cleaner production performance. (2) Green finance promotes cleaner production performance but inhibits end-of-pipe treatment performance. The optimization of industrial structure plays a partial intermediary role in the impact of green finance on cleaner production and end-of-pipe treatment. (3) Both "market-incentive" and "command-and-control" environmental regulations weaken the positive impact of green finance on cleaner production; "market-incentive" environmental regulation alleviates the negative impact of green finance on end-of-pipe treatment, while the moderating effect of "command-and-control" environmental regulation on end-of-pipe treatment is not significant.