“…At present, according to the contract, especially on cost sharing contract mainly concentrated in the field of supply chain has achieved many results [3][4][5][6][7].Cost sharing contract as an important way to achieve supply chain coordination, has been widespread concern and research [8][9][10].Lu Qihui [11]suppose that the market demand and service capacity are respectively related to the support level of service providers and service providers, and establish a service supply chain model based on cost sharing strategy; Gary Huaite [12] by establishing and solving the model found that in a monopoly or oligopoly market, only manufacturers and retailers between the cost sharing contract, it may be effective to maintain its market position; Hu Benyong, Lei Dong and Chen Xu [13] provides an option pricing method based on expected loss, that when the cost sharing and reputation sharing ratio to meet certain conditions, can achieve effective coordination of supply chain.…”