Based on the concept of relative grade of affiliation,a multiple objective system fuzzy optimization selecting method is presented considering the characters of investment project decision.

• 从相对隶属度的概念出发,结合投资项目决策的特点,提出一种多目标系统模糊优选方法,建立了决策模型该模型具有较好的通用性和可操作性,可供决策者参