我们对足月孕妇采用口服米非司酮促子宫颈成熟。现对疗效及作用机理讨论如下。 1 资料与方法 1.1 研究对象 1995年3月～1995年9月在我院住院待产、无重要器官合并症、妊娠37～42w、单胎头位、富颈Bishop评分<6分,准备计划分娩 We use oral mifepristone to promote cervical ripening in term pregnant women. The efficacy and mechanism of action are discussed below. 1 Materials and Methods 1.1 The object of study March 1995 ~ September 1995 hospital in our hospital to be produced, no important organ complications, pregnancy 37 ~ 42w, single head position, neck-neck Bishop score <6, ready to plan delivery