The best time to have a medication abortion is usually within 49 days of pregnancy. Usually the smaller the number of weeks of pregnancy, the higher the success rate and the faster the recovery. Medication abortion involves the termination of pregnancy by oral medication to reduce progesterone viability and cause strong contractions of the uterus. Different medications can be used at different periods of pregnancy. The best time for a medication abortion is usually within 7 weeks of early pregnancy. The gestational week can be calculated by the last menstrual period, and an ultrasound must be done before the medication abortion to exclude ectopic pregnancy and confirm it as intrauterine pregnancy. Usually, the larger the gestational week and the larger the gestational sac, the higher the chance of incomplete abortion. If the gestation is less than 7 weeks, the gestational sac is small, the possibility of complete expulsion of the gestational sac is high, there is not much bleeding, and the body recovers quickly. In addition, if the patient usually has irregular periods or has a small amount of vaginal bleeding after menopause, it is difficult to confirm the time of pregnancy. It is recommended to go to the hospital for ultrasound and other tests to confirm the time of pregnancy and follow the doctor’s advice to choose the abortion method.