Traditional supply chain finance mainly suffers from problems，such as difficulty in guaranteeing security，transferring commercial and bank drafts，and credit transferring across levels. The tamper-proof and traceable characteristics of blockchain technology have brought new vitality to traditional supply chain finance. Data on the chain and asset circulation are fair and transparent. The credit of core enterprises can penetrate multi-level suppliers and solve the problem of information islands. This article starts from the successfully implemented project Zhongyingshujin AI petrol station platform and introduces the effects and practical significances of the blockchain platform built on the Chain33 bottom architecture to the supply chain finance of traditional private petrol stations.