In the context of digital economy and sustainable development strategy, based on the panel data of 30 provinces from 2004 to 2019, this paper empirically studies the impact of digitalization level of manufacturing input on regional green technology innovation using static and dynamic spatial Durbin model under the weight matrix of economic distance. The results show that :(1) based on static panel, the input digitalization level has a negative spatial effect on green technology innovation within the province, but has no significant spatial spillover effect on green technology innovation outside the province; (2) Based on the dynamic panel, the input digitalization level has a positive spatial effect on green technology innovation within the province in the short term, and has a significant spillover effect on green technology innovation outside the province; In the long run, the overall input digitalization level has a negative spatial effect on green technology innovation within the province, and the spatial spillover is not significant. (3) Further regional heterogeneity analysis shows that there is heterogeneity in the impact of manufacturing digitization degree on green technology innovation in different regions, and there is spatial spillover effect in central and western China.