The manifestations of altitude reaction include headache, dizziness, fatigue, loss of appetite, nausea, vomiting and sleep disorders. As the altitude rises, the atmospheric pressure gradually decreases, and the partial pressure of oxygen decreases with the rise in altitude, resulting in a lack of oxygen in human tissues, causing headache, palpitations, chest tightness, shortness of breath, anorexia, nausea and vomiting, etc., which is the plateau reaction. The symptoms of plateau reaction include headache, fatigue, dizziness, sleep disturbance and gastrointestinal symptoms such as loss of appetite, nausea, vomiting, etc., which are usually aggravated by exertion. If plateau reaction occurs, the symptoms usually appear within 6 to 24 hours after the altitude rise, and the symptoms are relieved after 24 to 48 hours of plateau stay. If mild plateau reaction occurs, stop climbing, symptomatic treatment, such as the use of painkillers under the guidance of the doctor acetaminophen pain, etc.; if severe plateau reaction, need to be transported to a low altitude area in a timely manner, the appropriate treatment, such as oxygen, medication, etc..