The trapezoidal fuzzy number for denoting lingual random variable and the thought of TOPSIS are used in this model.And a scientific method for choosing cooperative partner in supply chain is provided.

• 此模型利用梯形模糊数来表示语言变量值，同时应用了TOPSIS的思想，为供应链合作伙伴的选择提供了一种较为科学的方法。