Heart failure grade III is likely to improve to grade II without affecting natural life expectancy if treated aggressively, with a five-year survival rate of less than 30% if not treated effectively, and a one-year survival rate of less than 50% for heart failure grade IV. Heart failure grade III is a more severe form of heart failure, but after active treatment there is a certain probability that it will get better and return to the level of heart failure grade II, which generally does not affect the natural life expectancy. If heart failure grade III is not treated effectively or in accordance with medical advice, life expectancy will be greatly affected, with a 5-year survival rate of less than 30%. Heart failure grade 4 is an advanced stage of heart failure, the structure of the heart has been changed, in general, the prognosis is poor, the patient not only can not engage in any physical labor, lying in bed may appear dyspnea and other symptoms, the one-year survival rate of less than 50%. It is recommended that heart failure patients receive regular outpatient treatment and regular follow-up.