Abstract
It is usually difficult to get accurately negotiators? priority and use the priority to get an available utility function in many negotiation support systems. In this paper, a negotiation model based on fuzzy multiple criteria decision making method is presented, in which negotiators? priority and assessments are described as trapezoidal fuzzy numbers. By using the model, above problem can be overcome. The model can be used to aid negotiators to negotiate and reach a satisfactory agreement.