Inventory pledge financing has become an important means of financing for small and medium-sized enterprises. Inventory portfolio and Circulating pledge is a new mode of inventory pledge which is emerging in recent years, and theoretical research about this has not attracted enough attention by the scholars. So this paper aims to explore inventory portfolio and circulating pledge financing making-decision problem. This article, firstly, makes the rules of inventory portfolio and circulating pledge; secondly, establishes corresponding linear programming function according to our rules; thirdly, shows the numerical analysis by an example, demonstrates the decision-making process of inventory portfolio and circulating pledge financing, provides a reference for the enterprises that need to finance.