Oxygen intake during pregnancy has the following benefits: First, oxygen intake can provide nutrition and more oxygen to the fetus, which can ensure better growth and development of the fetus, if the fetus has a lack of oxygen during pregnancy, it may suffer from intrauterine asphyxia and death, so oxygen intake can solve this symptom in time. Secondly, pregnant women with anemia or heart disease may experience hypoxia and other symptoms, so oxygen intake can provide oxygen for pregnant women and relieve hypoxia to ensure the normal growth of the fetus, and some pregnant women may have insufficient blood supply during pregnancy, so oxygen intake is very important. Third, many pregnant women in the process of pregnancy, poor body resistance and often do not pay attention to activities, long time sedentary, long standing, will have an impact on the body of the fetus, oxygen can relieve the symptoms of hypoxia, but also to promote blood circulation.