Heart failure is very common in clinical settings. The main treatments include strengthening the heart, diuresis, and vasodilation for symptomatic treatment. A mask or high-flow oxygen can be used if the patient's heart failure symptoms are difficult to correct, or if cardiogenic shock occurs. Aortic balloon counterpulsation and tracheal intubation can be adopted, with ventilator support for ventilation, and blood dialysis and other symptomatic supportive treatments can be used. Another point is to actively control or eliminate the causes of heart failure, etc.