The life expectancy of patients with coronary artery disease depends mainly on the severity of the vascular lesion and how well the patient is treated for prevention. If the disease is mild, well handled and controlled, it will not affect life expectancy. Therefore, as long as patients with coronary heart disease keep their risk factors under control, take long-term standardized medication and adhere to a healthy lifestyle, there are no obvious restrictions on daily life and no impact on life expectancy. If the coronary heart disease condition itself is serious, such as repeated myocardial infarction, multiple stent implantation or bypass, already heart failure, and a variety of serious arrhythmias, it will affect the life expectancy of coronary heart disease patients. Therefore the number of years you can live with coronary heart disease is not quite the same for each individual and definitely not analogous. Moreover, in the course of disease development, as in life, there are ups and downs, and if effective treatment is used, including effective medication and effective lifestyle treatment, coronary heart disease is expected to change from a high-risk state that affects life expectancy to a low-risk state.