Abstract: Based on the panel data of Chinese Joint-stock Banks, City Commercial Banks and Rural Commercial Banks from 2005 to 2017, the paper uses the difference-in-difference model to empirically examine the impact of green credit on the risk-taking for commercial banks. The research results show that, in the short term, Commercial banks' green credit business will increase their bankruptcy probability. However, based on the dynamic test, it can be found that, green credit has a lagging positive effect on risk-taking of commercial banks; The effect of green credit on bank risk-taking is obviously heterogeneous; The higher the political level of commercial banks, the greater the impact of green credit on their risk-taking; Compared with non-listed banks, the effect of green credit on listed banks is greater; In addition, there is no evidence that there is a significant difference in risk-taking between rural commercial banks and urban commercial banks in the implementation of green credit.

Key words: green credit, risk-taking, difference-in-difference, bank heterogeneity