Supply chain finance is a kind of financial business that financial institutions develop and innovate to meet the demand for capital from supply chain related enterprises. As a new way to alleviate the financing constraints of small and medium-sized enterprises，supply chain finance is gradually being recognized by people. According to relevant statistics，the number of small and medium-sized enterprises in our province has exceeded 1.29 million，contributing 60% of the province's GDP and 50% of tax revenue. However，due to information asymmetry and its own reasons，the external financing dilemma of small and medium-sized enterprises has always been an important factor restricting its development.On the one hand，small and medium micro enterprises play an important role in promoting scientific and technological innovation and promoting social and economic development；on the other hand，they are also plagued by financing difficulties，expensive financing and poor financing channels. Through the analysis of the financing development model of supply chain finance，this paper believes that supply chain finance integrates the supply chain core enterprises and upstream and downstream SMEs，integrates the entire supply chain resources，increases the credit for small and medium-sized enterprises，and revitalizes their accounts receivable. warehousing and transportation and inventory resources，to a certain extent，supply chain finance has played a role in alleviating the financing difficulties of small and medium-sized enterprises.