Pregnant women get oxygen  on a regular time, can promote baby's brain growth and development.

     Investigation showed that pregnant women during pregnancy body oxygen consumption is about 2 times that of the ordinary people, therefore, most pregnant women have different degrees of hypoxia symptoms. Timely and regular oxygenating can effectively alleviate the symptoms of fatigue, nausea and discomfort during pregnancy. Oxygenating is advantageous to the fetus, spuc, prevent premature birth, avoid fetal army break due to a lack of oxygen; Enough oxygen is beneficial to protect the mother's body health and fetal growth and development better.  Recommend that pregnant women to keep  oxygenating frequency more than three times a day , and prolonged ten minutes every time.