网络计划面对变化后的新情况，如何充分利用原图．简单易行地更新调整，这一直是难题。本文提出时差传递法，为解决这一难题给出了新思路．这种方法利用网络图的结构特征，把更新调整内容归类整理后，计算传递时差，再根据时差特征定义传递通道、决定传递方式，用时差传递方法，简单易行地更新调整网络计划． Network plan in the face of new changes, how to make full use of the original map. It has always been a challenge to update adjustments easily. This paper presents the time difference transfer method, to solve this problem gives a new idea. This method utilizes the structural features of the network graph to classify and update the contents of the adjustment, calculates the delivery time difference, and then defines the delivery channel according to the time difference feature, determines the delivery method, and uses the time difference transfer method to update and adjust the network plan simply and easily.