米非司酮为受体水平抗孕激素,具有终止早孕、抗着床诱导月经及促进宫颈成熟等作用,与孕酮竞争受体而达到抗孕酮的作用与糖皮质激素受体亦有一定结合力。米非司酮能明显提高妊娠子宫对前列腺素的敏感性,因此,国产米非司酮片自1992年上市以来,已在妇产科领域普遍应用,其应用指征 Mifepristone as the receptor level of anti-progesterone, with termination of early pregnancy, anti-implantation-induced menstruation and promote cervical maturation and other effects, and progesterone competition for receptors to achieve anti-progesterone and glucocorticoid receptor also have certain Binding force. Mifepristone can significantly improve pregnancy uterine prostaglandin sensitivity, therefore, domestic mifepristone tablets since its listing in 1992, has been widely used in the field of obstetrics and gynecology, the application of indications