Scarred uterus refers to the scarring of the uterus from previous surgeries, the most common of which is a caesarean section. Scarred uterus can be medicated abortion, but before the medicated abortion must do ultrasound and other checks, and exclude contraindications, there are the following precautions: 1, clear the location of the gestational sac and scar: before the medicated abortion should be clear whether the gestational sac bed in the uterine scar, if ultrasound is, you should avoid the medicated abortion, because at this time the medicated abortion is easy to cause rupture and bleeding of the scar, or even hemorrhage of the cervix, which seriously affects the safety of women’s lives. After thorough evaluation, other abortion methods can be chosen with blood transfusion and open abdominal preparation. If the gestational sac is deposited in the normal position of the uterine cavity, medication abortion can be chosen; 2, clarify the time of pregnancy: generally it is more appropriate to perform medication abortion within 40-50 days of menopause, if it is too early or too late, it may result in failure of abortion or have an impact on the woman’s body; 3, rule out contraindications: patients should rule out the contraindications to medication abortion, for example, pregnant women with abnormalities of the liver and kidney function can not do medication abortion, so as not to aggravate the liver and kidney function damage. The first thing you need to do is to get rid of any of the contraindications to abortion.