在项目实施中,不确定性因素的存在造成项目的完工与进度计划有偏差。本文采用三角模糊数描述工序持续时间的不确定性,并计算工序的期望工期。在此基础上进行缓冲区的计算,通过设置缓冲区制定的关键链有效的缩短了计划工期,保证项目的顺利完工。 In the project implementation, the uncertainty of the existence of the project led to the completion of the project and the progress of the plan deviations. In this paper, the triangular fuzzy number is used to describe the uncertainty of the process duration and the expected duration of the process. On this basis, the calculation of the buffer zone, through the establishment of the key chain of the buffer zone effectively shorten the planned duration of the project to ensure the smooth completion of the project.