A high SD value is usually considered as fetal hypoxia, which requires oxygen therapy, aspirin and other medications as prescribed by the doctor, and close observation of the fetal heart. The S in SD is the systolic phase of the umbilical artery, and the D is the diastolic phase of the umbilical artery. SD value mainly reflects the blood flow of the umbilical cord, and if the value is high, it suggests that the blood flow is obstructed. SD value is related to the gestational week, and if the value is higher than the normal range of the corresponding gestational week, it may lead to fetal hypoxia. Therefore, once diagnosed with high SD value, pregnant women need to take oxygen in time, and can take the left side lying position to increase the oxygen flow, so as to improve the hypoxia symptoms of the fetus. Pregnant women can be injected with anticoagulants, such as low molecular heparin and aspirin, under the guidance of the doctor, so as to reduce the resistance to blood flow and increase blood flow. At the same time, the frequency of fetal movement and fetal heart rate need to be closely detected. Patients with high SD values are advised to go to regular hospitals and take relevant treatment measures under the guidance of doctors. In daily life, it is necessary to ensure sufficient rest time and do not overwork.