Plateau reaction is based on the principle that the body is not supplied with enough oxygen due to factors such as lack of oxygen, low atmospheric pressure and cold. Plateau areas have lower oxygen content in the air and lower atmospheric pressure because of the higher altitude. Lack of oxygen and low air pressure will lead to a decrease in the partial pressure of oxygen in the alveoli, which in turn affects gas exchange in the alveoli, causing obstacles to the entire process of transporting oxygen by hemoglobin and releasing oxygen from the tissues by oxygenated hemoglobin, and the tissues become hypoxic, resulting in symptoms such as headache, dyspnea, and heart palpitations. In the whole organism, the central nervous system is most sensitive to hypoxia, so patients with plateau reaction mostly have the symptom of headache, patients can take oral aspirin and other painkillers under the guidance of the doctor to relieve the symptoms, and pay attention to rest, reduce physical labor, oxygen inhalation and so on.