This paper collects the case data of supply chain financial products based on blockchain technology. Through case analysis, combined with the business development of Z Bank's blockchain receivables platform, the platform business model process and risk control measures are sorted out and further analyzed.The research found that the Silk Chain cross-border e-commerce platform business model can make up for the shortcomings of the traditional cross-border e-commerce model, but compared with the cross-border e-commerce platform based on the public chain, the SilkChain model also has limitations, such as the SilkChain business model. The model relies heavily on traditional cross-border e-commerce platforms to provide industry resources and experience.