中文摘要：

供应链上同级供应商之间因其合作竞争关系，经常需面对策略应对与选择的难题。文章通过引入声誉模型，假定供应商为理性的不再是共同认知，分阶段讨论是否存在一个非理性概率p使其不受阶段T的影响，始终选择合作。在归纳计算后发现，在合作博弈次数T＞3的前提下，当供应商的信誉度p≥4/7时，他将总是选择合作；反之当p＜4/7时，其背叛行为则有可能出现。因此只需根据合作供应商以往的信誉是否低于p=4/7这一临界点，即可知选择何种博弈策略最为有利。

英文摘要：

Because of the co-opetition relations hips among suppliers at the same level in the supply chain. They often need to face the problem of strategy selection. By introducing a reputation model in this paper, that supplier are rational is no longer common, discussing in stages, whether there is a irrational probability p make it be not affected by phase of T, and always choose cooperation. After computation induction, on the premise of the number T〉3 of cooperative game,when the supplier credibility p≥4/7, the will always choose cooper-ation; On the contrary, when p〈4/7, the treachery may be happen. Therefore it just reference whether the credibility of suppliers is below the critical point of p=4/7, could know which kind of strategy is the most favorable.