晚期妊娠引产是搞好计划生育工作的辅助措施之一。国内多采用羊膜腔内注入利凡诺尔引产,认为该法简便、安全、高效;引产时间短,宫缩较为缓和;不足的是胎儿娩出后存活者较多。近来有人亦用羊膜腔内注入福尔马林引产,观察到该法成功率较高,活产率低,但引产时间却较长。根据两药的引产特点,本文作者之一曾采用羊膜腔 Induction of labor during late pregnancy is one of the supporting measures to do a good job in family planning work. The domestic use of amniotic fluid injection rivanol abortion, that the method is simple, safe and efficient; short induction of labor, contractions more moderate; inadequate is the fetus after delivery more survivors. Recently, some people also injected amniotic formalin injection of amniotic fluid, the law observed a higher success rate, low rate of live birth, but the induction of labor is longer. According to the induction of labor characteristics of two drugs, the author of this article had used amniotic cavity