介绍了排水管网水力与高程计算全局优化程序设计的基本思想。该程序除了能对各种地形条件下的排水管网计算进行优化选择之外，还增加了人机对话功能，进而加强了人对管网计算的宏观控制与局部的干预。因此它能令人满意地处理排水管网在各种复杂情况下产生的模糊性、随机性与不确定性因素所带来的问题，使各管段设计参数的选择服从整个管网工程总造价尽可能降低这个全局目标。 The basic idea of ​​the global optimization design of hydraulic and elevation calculation for drainage network is introduced. In addition to optimizing the drainage network calculation under various terrain conditions, this program also increases the human-machine dialogue function, which in turn strengthens the macro control and local intervention of people on the pipe network calculation. Therefore, it can satisfactorily handle the problems caused by the ambiguity, randomness and uncertainty of the sewer network under various complicated conditions, so that the selection of design parameters of each pipe segment is subject to the total construction cost of the entire pipe network. May reduce this global goal.