The symptoms of hypoxia in pregnant women are mainly manifested as the following: a. Cyanosis of the lips, nails and face. When the oxygen supply in pregnant women’s body is insufficient, the concentration of oxidized hemoglobin decreases, which will make pregnant women appear cyanosis, mainly manifested as cyanosis of mouth, lips, nails and face. Second, chest tightness, shortness of breath and difficulty in breathing. When pregnant women have symptoms of oxygen deficiency, the first manifestation is difficulty in breathing, feeling out of breath and chest tightness. Pregnant women with hypoxia may also experience dizziness, weakness, poor sleep and other symptoms. When pregnant women have chronic hypoxia symptoms, they will also show symptoms such as memory loss, inability to concentrate and irritability. Once the above symptoms appear, consider pregnant women with hypoxia. It is necessary to go to the hospital in time and give appropriate low-flow oxygen inhalation to correct the symptoms of hypoxia.