米非司酮作为抗孕酮受体作用蜕膜，绒毛细胞，抑制LH，HCG释放，导致出血及内源性前列腺素释放，诱发官缩，软化宫颈，配伍小剂量外源性前列腺素，促使子宫内妊娠产物排出，临床过程先产生先兆流产，逐渐达到完全流产，但也有不全流产、失血过多或出血时间过长者，为此我们采用 As a progesterone receptor, mifepristone acts on decidual and villous cells and inhibits the release of LH and HCG, resulting in bleeding and release of endogenous prostaglandin, inducing contraction and softening of the cervix, in combination with low-dose exogenous prostaglandins, Uterine pregnancy products discharged, the clinical process of first produce threatened abortion, and gradually reached a full abortion, but also incomplete abortion, excessive bleeding or bleeding time is too long, for which we use