It deals with points for considering in setting back-to-back antenna passive repeater station and the calculation of main index, compares the expenditure on constructing passive repeater station and microwave station. 介绍了设置背对背天线无源中继站应考虑的因素以及主要指标的计算,最后对无源中继站与微波站的建设费用进行了比较。