Fetal hypoxia occurs in the pregnant woman’s womb, and frequent fetal movements occur in the early stages of hypoxia. If there is long-term hypoxia, it is easy to cause the failure of several organs, for example, the brain cells have hypoxia, causing permanent brain damage, because the fetal brain is more sensitive to ischemic reaction. The damage to brain tissue is mainly divided into two types: 1. functional damage, where the fetus has lower than normal intelligence, or even restricted growth, cerebral palsy, etc. 2. known as organic damage, where fetal brain hypoxia is accompanied by other complications, such as brain cell necrosis, cerebral edema, intracranial ischemia, etc. Finally, fetal hypoxia can also accumulate to other organs causing diseases, such as damage to the lungs, causing aspiration Pneumonia, damage to the gastrointestinal tract of the organism, gastrointestinal dysfunction of the newborn, etc. Therefore, it is important for pregnant women to be examined accordingly during pregnancy.