The implementation of the "dual carbon" work has become a major task of the current government. As the core driving force for high-quality economic development, digital finance is a strong support for the realization of the "dual carbon" goals. With agricultural listed companies as the research object, this paper selects enterprise size, enterprise age, return on assets, asset liability ratio, fixed asset ratio, and management expenses as the control variables. By obtaining the green patent authorization data of all A-share companies from 2011 to 2020, it explores the promotion effect of digital finance on green innovation of agricultural enterprises via Poisson regression analysis model. The results show that digital finance can significantly and positively affect the green innovation of agricultural enterprises. Based on this, this paper puts forward corresponding management suggestions.