Plateau pulmonary edema is a relatively serious plateau reaction, which is a respiratory emergency and requires immediate treatment in situ, and cannot be cured by itself when returning to the mainland. Plateau pulmonary edema refers to plateau pulmonary edema that can occur after recent arrival in areas above 3000 meters above sea level, possibly too fast ascent, overwork, emotional stress or upper respiratory tract infection. It usually develops within 1-7 days, and patients will feel dyspnea, chest tightness, coughing, coughing, fatigue, headache, dizziness and other symptoms in the early stage, and their sputum may be accompanied by pink foam-like, and the disease often affects patients’ normal activities and sleep. As the disease progresses, patients may also develop shock, heart failure, cerebral edema and other symptoms. Oxygenation is the main measure in the treatment and rescue when hyperemic pulmonary edema occurs. Those who are seriously ill should be given oxygen at high concentration and pressure, and treated with hyperbaric oxygen chamber when available, and cannot directly expect to heal themselves after returning to the mainland. It is recommended that when you enter the plateau area, you should consider your own physical condition, do a strict health check, pay attention to warmth, prevent cold, and avoid overexertion. Patients who have suffered from plateau pulmonary edema are more prone to re-occurrence and should be prevented by medication according to the specific situation.