Abstract: The problems of the optimal ordering decision of the retailer, the optimal service decision of the financial enterprise, and system coordination are studied taking into consideration the fact that the credit consumption demand of the retailer depends on the credit service of the financial enterprise, in this paper. Consequently, the centralized decision-making model, the decentralized decision-making model, and the cost sharing contract coordination model are established respectively. By solving the above three models, it is concluded that the optimal ordering quantity, the optimal service, and the optimal system profit of the decentralized decision-making model are lower than those of the corresponding decisions of the centralized decision-making model. Besides, when the retailer shares a certain proportion of the credit cost of the financial enterprise and the financial enterprise shares a percentage of retailer’s unit actual product cost, the cost sharing contract can achieve the system coordination. A numerical analysis shows that the proposed cost sharing contract can achieve both system coordination and a win-win situation for the retailer and the financial enterprise.

Key words: seller’s consumption credit, retailer, financial enterprise, credit service level, cost sharing contract

摘要： 针对金融企业的信贷服务水平影响零售商的信贷消费需求情形下，研究零售商的最优订货决策、金融企业的最优服务水平决策和系统协调问题。为此，分别建立了集中决策模型、分散决策模型及成本共担契约协调模型。通过对模型的求解和推导得出：分散决策时的最优订货决策、最优服务水平及最优系统利润均比集中决策时的要低；当零售商分担一定比例的金融企业信贷服务成本，并且金融企业分担一定比例的零售商单位实际产品成本时，成本共担契约能够实现系统的协调。最后，进一步通过数值分析表明，所提出的成本共担契约可实现系统的协调，并使零售商和金融企业实现双赢。

关键词: 卖方消费信贷, 零售商, 金融企业, 信贷服务水平, 成本共担契约