米非司酮首先用来抗早孕，以后作为避孕药用于避孕。笔者通过观察米非司酮配伍米索前列醇与单用米非司酮，用于房事后紧急避孕的对比并进行临床分析，结果如下。IIR床资料1．l一般资料：自1993年12月～1995年11月在我院检查健康育龄妇女，自愿接受用药者共计176例、255个月经周 Mifepristone is first used to prevent pregnancy and later contraceptives as contraceptives. The author through the observation of mifepristone with misoprostol and mifepristone alone for post-mortem emergency contraception and clinical analysis, the results are as follows. IIR bed data 1. l General Information: From December 1993 to November 1995 in our hospital for examination of healthy women of childbearing age, a total of 176 cases of voluntary drug users, 255 menstrual weeks