The patient’s own miscarriage, i.e. spontaneous abortion, should be selected according to the patient’s own specific condition. Spontaneous miscarriage is divided into incomplete and complete miscarriage according to the symptoms of miscarriage. If the patient undergoes ultrasound examination and has a complete miscarriage, i.e. the symptoms of miscarriage disappear, there is no foreign body or blood clot in the uterine cavity, and there are no signs of infection, there is no need to perform the procedure to clear the uterus. However, if there is residual placenta and fetal membranes in the uterine cavity, especially if the patient has symptoms of vaginal bleeding, the abortion is incomplete. In this case, it is necessary to promptly treat the abortion with curettage and give antibiotics to prevent infection to avoid dangerous situations such as hemorrhage and hemorrhagic shock, which may have serious impact on the patient’s health. If the miscarriage is combined with infection, broad-spectrum antibiotics should be given orally for 2-3 days in mild cases, and intravenous antibiotics should be given in severe cases, and then perform the evacuation after the infection is controlled. In case of spontaneous abortion, women should not handle it by themselves, but should seek medical consultation as soon as possible to confirm their situation and avoid adverse consequences.