Abstract: Based on the analysis of environmental regulations, green finance and the influence of their synergy on green finance transformation mechanism, with the panel data of the six provinces in our country's approved green finance reform and innovation pilot zone from 2005 to 2020 as the research object, through systematic GMM, we do further research on the relationship between the regression of environmental regulation, green finance on the green transformation of the regional economy and the quantitative relationship between variables. Studies have shown that the impact of environmental regulations on the green transition of the economy has significant regional differences, and there is a strong positive correlation between green finance and the green transition of the regional economy. Environmental regulation plays a role in regulating and promoting the green transformation of the regional economy by green finance, and the synergy between the two can make the economic green transformation effect better.