The following are the conditions that require uterine evacuation: 1. After a medical abortion, if the pregnancy capsule is not discharged on time, the abortion is unsuccessful and there is a lot of vaginal bleeding, it is necessary to evacuate the uterus. 2. If the abortion is not clean in the process of natural abortion, it is also necessary to evacuate the uterus. 3. 4.If a woman has obvious placenta and fetal membrane residue after giving birth to a baby, and there is no way to discharge it through the normal way, she also needs to clear the uterus.