Hu Yuefei believes that supply chain finance is a closed credit activity based on the traditional supply chain trade, on the premise of the qualification guarantee of the core enterprises in the chain, taking the payment recovery of the financing enterprises as the repayment guarantee, and according to the system design of the banking financial business products. Yan Junhong, based on the practice of Shenzhen Development Bank's supply chain financial business, believes that supply chain finance is the financial services provided by the bank for single or multiple enterprises in the chain, which makes the "production supply sale" chain stable and smooth, and the industrial ecology of benign interaction is established.