The financial risks and causes of bank supply chain are diversified. The risk of bank supply chain financing mainly includes market risk, credit risk and operation risk, while the risk of supply chain financing mainly includes the financing mode of accounts receivable, inventory financing mode and prepayment financing mode. Risk reasons of receivables financing: credit level of financing customers, transfer risk, fraud risk, bad debt risk of receivables; risk reasons of inventory financing: risk of delivery note and warehouse receipt financing, operational risk of inventory financing business, risk of goods value; risk reasons in prepayment financing model include: loss of value opportunity of prepayment financing Risk and production capacity risk, credit risk caused by forged purchase and sale contracts and sales contracts, risk of loss of pledge due to failure to obtain pledge in time, and business risk and moral risk caused by inadequate internal control of banks.