If the fetus is in the pregnant mother’s belly, it is important to pay attention to any abnormal fetal movement, and you can observe the baby’s fetal movement to obtain the baby’s growth. If the fetal movement appears abnormal, it means that the baby is uncomfortable performance. If a baby who was active suddenly becomes quiet, or if a baby who was not moving suddenly becomes very agitated, this is a sign that the baby is suffering from oxygen deficiency. The reason for the quietness is to reduce the consumption of oxygen, while the restlessness is due to the lack of oxygen in the uterus, which has even affected the baby’s central nervous system. Since the growth of the fetus will become retarded after hypoxia, pregnant women should be able to measure the growth of the fetal baby regularly, such as maternal uterine height, abdominal circumference and weight, etc. If the growth does not last for more than two weeks, or the growth rate is slow, further examination is needed to avoid fetal growth stagnation. You can check the fetal heart rate to see if the fetus is normal, and also to know if the fetus is hypoxic. If the fetal heart rate is too frequent, i.e. higher than 160 beats per minute, or too slow, i.e. lower than 120 beats per minute, it is considered that the fetus may be hypoxic. Pregnant women should keep good condition during the test, and don’t be too emotional or nervous, which can also cause the fetal heart rate to accelerate. Pregnant women should pay attention to rest, check the baby’s development regularly, prohibit smoking and alcohol, supplement the body’s folic acid content, and strengthen nutrition to help the blood supply situation.