Acute heart failure is a common clinical emergency of the cardiovascular system. Although the steps for resuscitation of acute heart failure are not clearly defined in clinical medicine, according to the requirements of China’s heart failure treatment guidelines, it can usually be divided into several aspects: correction of body position, oxygen therapy, drug therapy and other treatments: 1, correction of body position: let the patient adopt the most comfortable position, usually a sitting position with both lower limbs hanging low, maintaining this position 10-20 minutes, can reduce pulmonary blood volume by about 25%. If the patient is in a sitting position and the lower limbs are not hanging low, the effect is not great; 2. Oxygen therapy: acute left heart failure pulmonary edema has severe hypoxia, and hypoxia can contribute to the deterioration of pulmonary edema, so actively correcting hypoxia and interrupting the vicious circle is the first link of treatment. The method of oxygen can be nasal catheter oxygen, mask oxygen, if the effect is not satisfactory, can consider the application of ventilator mechanical ventilation; 3, drug therapy: patients should be under the guidance of doctors, cardiotonic, diuretic drug therapy, commonly used drugs are cetiran, furosemide. If combined with myocardial infarction, anticoagulant drugs, such as low molecular heparin, are usually added. If the heart failure is caused by arrhythmia, antiarrhythmic drugs will be used; 4. Other treatments: If the effect of drug therapy is not obvious or the effect is slow, intra-aortic balloon counterpulsation therapy, invasive mechanical ventilation therapy, and extracorporeal circulation support therapy may be required if necessary. In addition, the cause of acute heart failure needs to be clarified and removed in order to fundamentally correct the heart failure.