Alcohol humidification is one of the measures for the treatment of acute pulmonary edema, and the concentration of alcohol is about 20%-30% in the case of oxygen inhalation by mask, and 50%-70% in the case of oxygen inhalation by nasal mask. Patients with acute pulmonary edema will have symptoms such as hypoxia, dyspnea, coughing, coughing pink foamy sputum, etc. Aggressive symptomatic treatment should be given. The first step is to administer oxygen, which is accompanied by alcohol humidification, which is the addition of alcohol to a water-sealed bottle to relieve symptoms. Alcohol can reduce the surface tension of the foam in the alveoli, reduce the production of foam, and facilitate the gas exchange of inhaled oxygen in the alveoli, correct the hypoxic state, and promote the recovery of lung function. Most of the acute pulmonary edema is caused by acute left heart failure, and in addition to oxygen, medication such as cardiotonic, diuretic and vasodilator therapy should be given. Cardiotonic drugs can be given intravenously to cediran; diuretics are usually given intravenously to tachycardia or torasemide; vasodilator drugs according to the patient’s condition, but also nitrate drugs.