Abstract: It has been a real problem that banks squeeze the real economy interests these years, while the promoting of interest rates iberalization policy failed to solve the small and middle-sized enterprises(SME) financing problems. From the supply chain finance perspective, the influence of bank's lending rate decision on the operation of the supply chain enterprises under limited demand information is investigated. In the context of interest rates iberalization, a trilateral game model operating under a wholesale price contract with the decision order being bank-retailer-supplier is constructed. Robust newsvendor method and the mini-max method are applied to characterize the trilateral game, which is, the bank decides lending rate r, then the retailer decides its order quantity Q and the supplier decides its price w, the equilibrium solution was obtained. A numerical analysis on a supply chain selling high-margin products with highly market demand uncertainty is conducted, and results show that bank's involvement will increase supply chain performance under limited information;The amount of supplier's own funds is an important indicator to measure the impact of interest rates policy did to supply chain efficiency;Interest rates iberalization cannot solve the problem of bank's embezzlement of benefit to the real economy and moderate government control is indispensable.The interaction between logistics and fund flow with a financial institution such as a bank joining the supply chain is studied, proving a brand new perspective for traditional supply chain research. The process of using robust newsvendor method and mini-max method to describe the trilateral game among bank, retailer and supplier then obtain the equilibrium solution offering a new technique to solve multi-player game and newsvendor problem.

Key words: interest rates iberalization, supply chain finance, robust decision, information shortage