Supply chain finance (SCF) is an important means to deepen financial service for the small and medium enterprises.According to coalitional game theory, there are two X-coalitions in the SCF which will lead to the positive-sum result.That is to say, the business partners in SCF have relative savings on the costs and it can increase the total gains for all of them.In detail, time cost and half-life loss are the costs of information flow, as well as the cost of material flow is determined by the efficiency of regulatory.Cost of cash flow is the core benefit, so the issue analysis particularly according to each of these players in the SCF.