The benefits of quitting smoking for the heart: First, smoking is an important risk factor for coronary heart disease, and the death rate of coronary heart disease is 2-6 times higher in smokers than in nonsmokers, so quitting smoking for patients with coronary heart disease can make the risk of acute coronary events significantly lower, even close to the level of nonsmokers. Second, after heart disease patients quit smoking, they can make their medications work better and stop the coronary artery endothelial cell damage from continuing to worsen. Third, quitting smoking also has certain benefits for the respiratory tract of heart disease patients, which can improve the ventilation function of the lungs and increase the oxygen supply to the cardiomyocytes, thus reducing the incidence of acute coronary events. Fourth, coughing, coughing and shortness of breath are reduced, appetite is increased and mind is adjusted after quitting smoking, which is also not conducive to coronary heart disease attacks.