Abstract:Abstract: how does digital finance promote the green transformation of industrial economy? This paper uses Peking University Digital inclusive finance index and 2011-2018 provincial panel data to analyze the effect and mechanism of digital Finance on the green transformation of industrial economy. The results show that digital finance has significantly promoted the green transformation of industrial economy. At the same time, it has a significant role in promoting the level of digital finance composite index, coverage index, use depth index and digital degree index. Mechanism analysis shows that digital finance promotes the green transformation of industrial economy mainly through improving the ability and level of industrial green technology research and development, and improving the operating performance of industrial enterprises. Further research shows that, on the one hand, digital finance promotes the green transformation of industrial economy by improving the financing efficiency of industrial enterprises and then improving their green technology R & D ability and level; On the other hand, digital finance can promote the green transformation of industrial economy by improving the level of innovation and Entrepreneurship of industrial enterprises and improving their business performance.