This paper sorts out the detailed research on the relationship between green credit and commercial banks and the influence mechanism, firstly by understanding the research results of domestic and foreign scholars in this key field, and secondly by laying a theoretical precedent for the subsequent research. Secondly, through the literature sorting, the defects and deficiencies of the existing literature research are found and proposed to point out the direction for future in-depth research and enrich the research results in the relevant fields. Finally, in order to conduct practical exploration, theoretical results for banking financial institutions to carry out green credit business must be provided.