If the pregnant woman is in normal health, it is not recommended to inhale oxygen in large quantities for a long time, and it is recommended to inhale oxygen at a low flow rate for a long time, with the concentration of oxygen not exceeding 2 L/min. The high flow rate of oxygen for a long time may cause changes in the interstitial lung mass of the pregnant woman, and she needs to pay attention to keep her body healthy and try not to suffer from infectious diseases such as colds and diarrhea, which may have an impact on the fetus. To ensure the health of your child and conceive a healthy fetus, try to restrain yourself and correct bad habits. Pay attention to strengthening nutrition, taking more rest and eating more foods rich in vitamins and trace elements to ensure the nutritional supply of the fetus. For some pregnant women with symptoms of hypoxia, they can be treated with oxygen under the guidance of a doctor to prevent the occurrence of intrauterine hypoxia in the fetus, and they need to pay more attention to fetal movement,.