Modelling and Simulation for Supply Chain Contract Based on the Inventory Management under Uncertain Demand

This article mainly studies the harmony problems according to the supply chain contract about inventory management under uncertain demand, discusses the necessary condition to realize the harmony based on the supply chain system about inventory management and the concrete influence correspond to the contract. This article also constructs two models in the same condition that base on the supply chain contract about inventory management under uncertain demand, one is the seller´s profits model, other is seller´s profits constitutes model under the method of negative preface of the dynamic state programming. The conclusions indicate that the contract can help system´s Pareto optimization, and realize the best performance in the whole supply chain and the perfect harmony of the supply chain system under uncertain demand.