The main reaction of a pregnant woman to her baby’s lack of oxygen is to feel that the fetus is throwing a tantrum, abnormal fetal movement and fetal lack of oxygen, called intrauterine distress. It is not easily detected by the pregnant woman herself, and the abnormality is sometimes felt through fetal movement. The main emotional signal of fetal hypoxia is temper tantrum, which initially manifests itself as frequent fetal movements, then decreases and decreases in frequency, and then disappears. Weak fetal movement is an important sign of fetal distress, and daily detection of fetal movement can predict the safety of the fetus. The method of detection is to detect fetal movement >10 times every 12 hours near full term. The number of fetal movements in the early, middle and late stages of pregnancy is calculated by the number of fetal movements in one hour each, and the number of fetal movements in the three times is multiplied by 4, which is the number of fetal movements in 12 hours. The fetus will also send out distress signals in the early stage of hypoxia, and they are manifested by tantrums, which should attract the attention of pregnant women. The calculation method of fetal movement is to count the number of fetal movements for 1 hour in the morning, midday and evening every day, >3 times per hour, which reflects the good condition of the fetus; you can also multiply the number of fetal movements in the morning, midday and evening by 4, which is the number of fetal movements in 12 hours. If the number of fetal movement reaches more than 30 times in 12 hours, it reflects the good condition of the fetus; less than 20 times, it means the fetus is abnormal. If the fetal movement is less than 10 times, it indicates that the fetus is lack of oxygen in the uterus, so you should lie on your side or sit down, concentrate your mind, and use some small objects to mark or record on paper so as not to miss. If the fetus moves continuously or feel more than one fetal movement at the same moment, it can only be counted as one time, wait for the fetal movement to stop completely, and then count again, if the fetus continues to move for a long time, you should also be alert. The strength and number of fetal movements vary greatly among individuals, with some as many as 100 or more times in 12 hours. The pregnant woman will get a constant number after counting for a period of time, which can be used as a standard for self-checking the safety of the fetus. The other manifestation of hypoxia in pregnant women is that they feel that they are not gaining weight and their growth stops. After hypoxia, the growth of the fetus will also be slowed down and the weight, uterine height and abdominal circumference of the pregnant woman will not grow or grow very slowly. Due to the pregnant woman’s own hypoxia and ischemia, it leads to intrauterine ischemia and hypoxia of the fetus, which affects the development of the fetus. If the increase does not persist for 2 weeks, further examination should be performed.