In the early stages of pregnancy, which is a period when the fetus is not very stable, if vaginal bleeding occurs after intercourse, it is generally considered that a preterm miscarriage has occurred. In this case, the first thing to do is to go to the hospital for an ultrasound to check the condition of the fetus in the uterus, and to take care of rest, as bed rest is necessary in case of bleeding. For pregnant women with pre-eclampsia miscarriage, it is advisable to be hospitalized for fetal preservation treatment. During hospitalization, treatment can be carried out through intramuscular progesterone, intravenous use of fetal preservation drugs, and Chinese herbal medicine for fetal preservation. If bleeding from intercourse causes unavoidable miscarriage, it is necessary to perform a clearance operation as soon as possible to avoid causing further increase in bleeding.