The clinical methods of termination of pregnancy are either medical abortion or abortion, which is less harmful than abortion. Although medication abortion does not require surgery, the duration of vaginal bleeding after medication abortion will be longer, and the prolonged duration of vaginal bleeding will prolong the opening of the uterus, which will increase the chance of retrograde infection. If you are not careful after a medical abortion, it may lead to cervical inflammation, pelvic inflammatory disease, or even chronic pelvic inflammatory disease and cause infertility and sterility, so it is more harmful. In addition, the possibility of complete miscarriage is relatively large, but some people will cause incomplete miscarriage may need to do clean-up surgery, which will cause secondary damage. So the harm of medical abortion will be greater.