Based on the provincial panel data of China from 2010 to 2019, the DEA-BCC model is used to measure the efficiency of green technology innovation, and then the panel regression model is constructed to empirically-study the impact of green credit on the efficiency of green technology innovation. The overall regression results show that green credit has a significant positive effect on the efficiency of green technology innovation.The regional regression results show that green credit has a positive effect on the efficiency of green technology innovation in both eastern and central China, but there are significant regional differences between eastern and central China.