If the abortion is not clean, it is necessary to clean the uterus. About 85% of patients who have a medical abortion are able to have a clean abortion, while the rest of patients usually have an incomplete or failed medical abortion. In the case of incomplete medical abortion, there is embryonic tissue left inside the uterine cavity, and if this tissue is not discharged in time, it will affect the contraction of the uterus, thus causing heavy bleeding and infection, which will affect the future menstruation and pregnancy. If it is determined that the abortion is incomplete, it must be done in time to clear the uterus, which has a certain impact on the endometrium.