为了降低企业信息集成的风险,提出了通过多数集(Majority Additive,MA)的有序加权平均(Ordered Weighted Averaging,OWA)和灰色评估法来选择集成服务供应商.构建了企业信息集成服务供应商评价指标体系.针对供应商选择问题的复杂性,提出了基于MA-OWA和灰色评估法相结合的选择决策模型.通过具体案例研究证明了整个评价指标体系及模型是可操作、实用和有效的. In order to reduce the risk of enterprise information integration, this paper proposes to select integrated service providers through the Ordered Weighted Averaging (OWA) and gray evaluation method of Majority Additive (MA), and builds an enterprise information integration service provider Evaluation index system.According to the complexity of the problem of supplier selection, a selection decision-making model based on MA-OWA and gray evaluation method is put forward.The case study shows that the whole evaluation index system and model are feasible, practical and effective.