After the occurrence of altitude sickness, the oxygen intake is mainly based on low-flow continuous oxygen intake, which can replenish the lack of oxygen in the human body to a certain extent and help to relieve the altitude sickness. Low-flow continuous oxygen inhalation is to let patients inhale oxygen with low concentration, and it lasts for a long time, usually more than 4 hours, in order to effectively relieve the symptoms of cerebral edema and pulmonary edema caused by plateau reaction. The main cause of altitude sickness is the lack of oxygen in the air due to the thinness of oxygen in the plateau area, which leads to a series of uncomfortable reactions of the whole body. In addition to oxygen, patients should also pay attention to rest, adjust their mindset, avoid fear and do not over-activity. In terms of diet, you should eat lightly and not overeat, because a large amount of oxygen consumption will lead to the aggravation of plateau reaction symptoms.