米非司酮配伍米索前列醇成功用于终止早孕，已广泛应用。其可否安全有效地用于中期引产，我们对比传统水囊和雷凡诺引产，进行了临床观察。我们采用米非司酮总量２５０ｍｇ分９次口服，首次加倍，最后加服米索前列醇６００ｍｇ。结果：米非司酮组完全流产率９６．６６％，在服米索前列醇后引—流时间较其他二种方法明显缩短，产后出血少。故认为，米非司酮配伍米索前列醇用于中期引产安全、高效。 Mifepristone and misoprostol have been successfully used to terminate early pregnancy and have been widely used. Whether it can safely and effectively be used for mid-term induction of labor, we compared the traditional balloon and radiofrequency, conducted a clinical observation. We use mifepristone 250mg total 9 points orally, for the first time double, the final plus misoprostol 600mg. Results: The mifepristone group had a complete abortion rate of 96.66%. After taking misoprostol, the lead-flow time was significantly shorter than that of the other two methods with less postpartum hemorrhage. Therefore, the combination of mifepristone and misoprostol for mid-term labor safety and efficiency.