Acute pulmonary edema can be life-threatening, so it needs to be treated promptly at the hospital when it is detected. At this stage, the treatment of acute pulmonary edema is mainly aimed at the treatment of acute pulmonary edema and the active treatment of primary diseases. The primary diseases leading to acute pulmonary edema are relatively numerous and complex, mostly due to a sudden increase in pulmonary circulatory pressure caused by a sharp decrease in myocardial capacity. For example, diseases such as acute myocarditis or myocardial infarction, aortic stenosis or mitral stenosis, massive pericardial effusion, hyperthyroidism and severe anemia. Treatment also varies depending on the disease. The main treatments for acute pulmonary edema are: 1. position: semi-recumbent or sitting position with legs down to reduce venous return; 2. oxygen: high-flow nasal catheter administration to correct hypoxia; 3. sedation: reduce the additional cardiac burden caused by agitation; 4. rapid diuresis: relieve pulmonary edema; 5. vasodilators to reduce anterior and posterior loads; 6. cardiac stimulants to enhance cardiac contractility without obvious contraindications . While treating acute pulmonary edema, the primary disease should be rescued at the right time according to the patient’s condition. It is very important to seek medical attention early in the treatment of acute pulmonary edema. Patients who have symptoms of acute pulmonary edema should seek medical attention (emergency department or cardiology) in time to avoid delaying the condition.