Under normal circumstances, it is not recommended for pregnant women to inhale oxygen. During normal pregnancy, the oxygen in the air is sufficient for pregnant women and fetuses, so there is no special significance for pregnant women to inhale oxygen under normal circumstances, and inhaling oxygen without indications will disturb the internal environment of the body, which is unfavorable to fetal development. If there are special circumstances, such as dizziness, weakness, chest tightness, breathlessness, or fetal heart monitoring and ultrasound, oxygen can be administered only when the fetus has signs of intrauterine hypoxia, which is beneficial to both the fetus and the pregnant woman. When inhaling oxygen, be careful not to inhale oxygen for too long, and the oxygen concentration should not be too high, otherwise it is not good for the development of the fetus and the health of the pregnant woman herself.