Abstract: In the retailerleading bipolar supply chain, firstly, manufacturers optimal output decision, retailers optimal ordering decision and pricing decision are studied. The impact of the crew decision when the wholesale price and demand is changing uncertainly by the means of numerical analysis is researched. Secondly, it is discovered that the core content of the retailers decision during coordination is bidirectional options price through introducing bidirectional option contract as well as analyzing the relation between parameter and contractual conditions that will achieve coordination. At last, the effectiveness of the bidirectional options contract in improving supply chain efficiency by numerical example is proved. Bidirectional option price range that can receive benefits for both sides to gain Pareto Improvement is found out.

Key words: supply chain contract, retailerled, bidirectional option

摘要： 在零售商主导的两级供应链中，本文研究了分散决策时制造商的最优产量决策、零售商的最优订购决策及定价决策，通过数值分析，研究批发价格及需求不确定性变化对成员决策的影响；引入双向期权契约，分析了实现协调的契约条件及参数之间的关系，发现协调时零售商决策的核心内容是双向期权价格；通过算例验证了双向期权契约在提升供应链效率方面的有效性，找出能使得双方收益获得帕累托改进的双向期权价格区间。

关键词: 供应链契约, 零售商主导, 双向期权