Plateau pulmonary edema is an acute malignant plateau disease in which acute severe hypoxia causes a sharp increase in pulmonary artery pressure, an increase in pulmonary blood volume, an imbalance in the ratio of ventilation to blood flow, and leakage of fluid into the interstitium and alveoli through pulmonary capillaries, which impedes normal gas exchange. Early diagnosis, timely treatment and safe downward transport are the keys to treat this disease. The prevalence of plateau pulmonary edema is 0.5% to 2.0% when entering areas above 5000 meters above sea level. The contributing factors are mostly related to cold, exertion, hunger, respiratory infections, alcohol consumption, etc. Mental tension and emotional excitement can also trigger the disease. Clinical manifestations: When arriving at a plateau recently (usually above 3000 meters above sea level), there is dyspnea at rest, coughing, and coughing up white or pink frothy sputum. Central cyanosis and wet woven P-rays of the lungs are the main basis for diagnosis, which can be seen as punctate or cloudy infiltrative shadows centered on the pulmonary hilum to the unilateral or bilateral lung fields, often diffuse and irregularly distributed, or fused into large lamellar shadows. The heart shadow is mostly normal, but pulmonary hypertension and right heart enlargement may also be seen. Other cardiopulmonary disorders such as myocardial infarction and heart failure were excluded by clinical and electrocardiographic examinations, and pneumonia was also excluded. After bed rest, oxygenation and other treatment or low turn, the symptoms improve rapidly and the X-ray signs may disappear within a short period of time.