Review Article When small and medium-sized enterprises face financial constraints, they often encounter financing difficulties and expensive financing problems. This not only seriously affects the performance of enterprises, but also reduces the synergy efficiency of the entire supply chain. This paper considers the three-tier supply chain model of retailers facing the problem of capital constraints, designs a credit guarantee financing contract for retailers, and enables retailers to obtain

more »

... tain loans from banks, so as to solve their financing problems. This paper considers the retailer's initial capital, as well as the residual value of unsold goods, and so on, and studies how retailers make optimal order decisions in the face of initial shortage of funds.