To reduce fetal umbilical blood flow, depending on the specific cause, relaxation, rest in the left lateral position, administration of medication such as vitamin C, oxygenation, and active control of blood pressure are needed if the pregnant mother has gestational hypertension. The fetus is connected to the mother’s placenta through the umbilical cord and obtains nutrition and oxygen in this way. Under normal circumstances, the umbilical cord blood flow index is less than 3.0. A higher than normal umbilical cord blood flow may be due to temporary intrauterine hypoxia of the fetus, placental hypoplasia in late pregnancy, or maternal disease. In the absence of any disease, high umbilical cord blood flow may be related to the mother’s overwork and tension, etc. At this time, the mother-to-be should properly relax and take rest in the left lateral position, which can alleviate the intrauterine hypoxia of the fetus and allow the umbilical cord blood flow to gradually return to normal. High umbilical cord blood flow in late pregnancy suggests that there may be placental hypoplasia. After the diagnosis is clear, vitamin C can be given intravenously and low-flow oxygen can be given as prescribed by the doctor. If the umbilical cord blood flow continues to increase after 37 weeks of pregnancy, cesarean section is recommended to terminate the pregnancy to ensure the safety of the mother and child. If the umbilical blood flow is high due to maternal disease factors, intervention must be based on the specific etiology. If it is caused by hypertension during pregnancy, the mother needs to take antihypertensive drugs to reduce the resistance of blood vessels, thus reducing the umbilical blood flow. When the umbilical blood flow is elevated, please actively follow the doctor’s advice to regulate and treat it.