Compared to abortion, medical abortion is less damaging to the body. Medical abortion is performed by the drug mifepristone and misoprostol acting on the body to expel the pregnancy tissue from the uterine cavity. If a patient who has a medical abortion is successful, the risks of medical abortion are less, after all, there is no operation of the uterine cavity. Induced abortion is a surgical procedure in which the uterine cavity is manipulated to suck or scrape the pregnancy tissue out of the uterine cavity, which is more damaging to the body. If the patient has a gynecological ultrasound one week after the medical abortion and there is intrauterine residue or if the medical abortion fails, the uterus needs to be cleared, which is also more damaging to the human body. After an abortion, it is generally recommended that a week of outpatient review, if there is intrauterine residue also need a second clearance surgery.