The success rate of medical abortion is mainly seen in two ways: First, if the gestational sac is not discharged within a day after the medical abortion, then this medical abortion is a failure and needs to be cleaned immediately. Second, one week after the medical abortion must check the ultrasound, through the ultrasound examination can be clear whether there are residues in the uterine cavity, if there are residues in the uterine cavity is not clean medical abortion. If the residue is too much, it is necessary to perform a curettage, if the residue is small, you can take medicine or use the method of uterine rejuvenation to promote the discharge of the residue, after the medical abortion must pay attention to anti-infection treatment.