In this paper, we establish a fuzzy model for solving optimal activity duration satisfied the prespecified project due date in fuzzy network, and present two level multi objective linear programming model of the fuzzy model.

• 建立了模糊网络中满足规定工程周期的活动最优延续时间的模糊模型，并给出了该模型等价的具有二个目标层次的多目标规划模型。