Termination of pregnancy through the use of drugs is a medicated abortion, and the drugs generally used are mifepristone and misoprostol. Mifepristone is a kind of drug with anti-progestin effect, after the use of the body to inhibit the effective level of progesterone and thus effectively inhibit the growth of the uterine lining, inhibit the fertilization of the egg implantation, with the effect of anti-early pregnancy. Misoprostol is a prostaglandin E1 derivative, which has a contraction effect on the pregnant uterus, and the two together can realize the effect of drug abortion. Because of the strict requirements for the timing of the pregnancy, medication abortion usually needs to be performed before the 49th day of pregnancy. Not all pregnancies can be aborted through medication, so the choice of abortion needs to be based on their own pregnancy time to judge. The appearance of the pregnancy sac but not more than 49 days can be drug abortion, pregnancy more than 49 days not more than 14 weeks can be abortion, pregnancy more than 14 weeks need to terminate the pregnancy through induced abortion.