Digital technology will profoundly impact green innovation by enabling deep supply chain transformation through cost reduction and efficiency gains. Based on a quasi-natural experiment of China's supply chain innovation and application pilot policy, this paper investigates the impact of supply chain digitization on green innovation using data from 1836 listed companies from 2013 to 2021. The results find that: (1) Supply chain digitization significantly promotes firms' green innovation level, a finding that still holds under placebo and other tests. (2) Mechanism tests indicate that supply cha...