If the value of middle cerebral artery pi is low, if the blood flow of umbilical cord and fetal heartbeat are normal, it is usually not important. If the middle cerebral artery pi is persistently low, fetal heart rate monitoring does not pass, consider the possibility of intrauterine hypoxia, prolonged intrauterine hypoxia, will affect the normal development of the fetus, it is recommended that the pregnant woman can be inhaled and other measures to increase the oxygen content, to alleviate the symptoms of intrauterine hypoxia in the fetus, and actively find the cause of the disease, and symptomatic treatment. It is recommended to test the pregnancy condition regularly and pay attention to observe the fetal heart and movement.