The concentration of alcohol wetting oxygen inhalation is generally 20%-30%. Alcohol wetting is mainly used to wet the alveoli by using the principle that alcohol reduces the surface tension of the foam in the alveoli, and is commonly used for patients with pulmonary edema. Alcohol can reduce the tension of the foam within the alveoli, causing the foam within the alveoli to rupture, relieving the patient’s symptoms of dyspnea and thus improving the patient’s condition, mainly for patients with pulmonary edema, because the pathology of pulmonary edema is that most of the alveoli exude too much and produce a large amount of foamy sputum, which accumulates in the alveoli leading to alveolar diastole, pressure drop, and lack of oxygen in the body, triggering dyspnea and asphyxia, and seriously endangering life. Once it appears, you should be immediately hospitalized in the respiratory department and treated with alcohol wetting oxygen to relieve the condition, and antibiotic or hormone treatment is needed to prevent infection and inflammatory exudation. Life should be a light diet, eat easily digestible food, do not eat spicy, stimulating, greasy food, and should not smoke.