Oxygen deficiency in pregnant women can be relieved in the following ways: first, oxygen inhalation health care, each inhalation time of 30 minutes, twice a day. Pregnant women can effectively reduce the probability of various hypoxic diseases and help the healthy growth of the fetus. Second, pregnant women can use the left side of the sleeping position, if you take the left side of the sleeping position to sleep, will not cause excessive pressure on the heart of pregnant women, but also to speed up the placenta and the uterus blood flow, better supply the fetus oxygen and nutrients, to avoid fetal hypoxia. Third, pay attention to the environment, pregnant women should open the doors and windows at home to help ventilation, it is recommended that pregnant women usually go for a walk in the wilderness and parks with sufficient oxygen and fresh air, not only to relax, but also to relieve the symptoms of hypoxia, pregnant women should also go to fewer closed spaces, such as cinemas, KTV boxes, shopping malls and other places.