Research on Supply Chain Contract Coordination Based on Supplier Group E v a l uation

• 1、College of Management and Economics, Tianjin University,Tianjin 300072

Abstract：With the expansion of the company's scale, the original single supplier is gradually transformed into a supplier group. The evaluation of the retailer by the supplier group will have a certain impact on the new supplier’s decision-making behavior. Therefore, it is necessary to study the coordination of supply chain in the context of the evaluation of supplier group. This paper establishes a supply chain coordination decision model under the Stackelberg game model constructs the profit function of the supplier and the retailer when considering the supplier group evaluation, discusses the coordination problem of the supply chain under this background. This paper discovers the traditional revenue sharing cannot achieve the overall optimal of the supply chain. Based on this, it designs the ex ante contract—the improved revenue sharing contract, and the ex post contract—two-tariff contracts to coordinate the supply chain. The results show that, first, the supply chain coordination can be achieved through reasonable parameter design, improved revenue-sharing contract, and two-tariff contracts. Second, the improved revenue-sharing contract provides suppliers with more flexibility in choosing wholesale prices. Third, in the decentralized model supply chain, the improved revenue-sharing contract supply chain, and the two-tariff contracts, the supplier group's evaluation of the retailer's impact on the supplier's wholesale price is positive, and the degree of impact is decreasing.

Keywords： management of supply chain supplier group e v a luation supply chain coordination revenue sharing contract two-tariff contract