The benefits of quitting smoking at the age of 65 are that it can reduce the incidence of cardiovascular and cerebrovascular diseases, prevent respiratory diseases, reduce the economic burden, and prolong life. Smoking is harmful to health. Toxic substances contained in tobacco, such as nicotine and nitrogen compounds, are addictive and also cause damage to multiple systems such as the cardiovascular, cerebrovascular and respiratory systems, and are high-risk factors for inducing myocardial infarction and chronic bronchitis. Quitting smoking can reduce or eliminate the health hazards of smoking, and people of any age can get great benefits from quitting smoking, and the sooner you quit, the greater the benefits. Quitting smoking at age 65 has many benefits, including reducing the incidence of cardiovascular and cerebrovascular diseases (e.g. coronary heart disease, cerebral infarction, etc.), preventing respiratory diseases (e.g. chronic bronchitis, chronic obstructive pulmonary disease, etc.), reducing the economic burden to a certain extent after quitting smoking, and extending life expectancy. Smoking is harmful to health and there are many benefits of quitting smoking, which can be treated with the help of a doctor.