Supply chain finance has brought new choices to agricultural enterprises facing funding shortages. However, due to the different credit ratings and frequent default events of participating enterprises in the chain, the promotion of agricultural supply chain finance business is hindered. This can be solved by the technical characteristics of blockchain. This study discusses the rationality and feasibility of applying blockchain technology to agricultural supply chain finance through literature review and mechanism analysis, using data from Chinese industries. The application of blockchain technology helps to build a good supply chain financial ecosystem, helping Chinese agricultural enterprises explore new financing channels and overcome financial difficulties.