Whether a miscarriage needs to be cleared or not is mainly determined by the type of miscarriage. Miscarriage is mainly categorized into preterm miscarriage, inevitable miscarriage, incomplete miscarriage, complete miscarriage, retained miscarriage and recurrent miscarriage. If it is a preterm miscarriage, it needs to be treated with birth control. If it is an inevitable miscarriage, it is necessary to decide whether to remove the uterus according to whether it is a complete miscarriage or an incomplete miscarriage. If the ultrasound suggests that the pregnancy is completely expelled, suggesting a complete miscarriage, then there is no need to carry out removal surgery. If the ultrasound suggests that there is tissue remaining in the uterine cavity, removal of the uterus is required. If hemorrhage occurs, the patient also needs to be hospitalized immediately for resuscitation, blood transfusion, fluid transfusion and antibiotics to prevent infection. If the ultrasound suggests an induced abortion, that is, the embryo stops developing, the decision will depend on the bleeding at the time. If there is little or no bleeding, mifepristone combined with misoprostol can be given first, followed by evacuation of the uterus. If there is heavy bleeding or hemorrhage at the time of the abortion, the uterus must be cleared on an emergency basis.