Stent implantation actually addresses only localized stenosis or occlusion of coronary arteries, improves blood supply to the myocardium, and reduces myocardial infarction, heart failure, or cardiogenic death. It has no effect on the atherosclerotic process that causes coronary heart disease in patients. Therefore, once patients with coronary heart disease are clearly diagnosed, they should actively intervene with or without stent implantation, mainly including lifestyle changes such as smoking cessation, diet and weight control, moderate physical activity, and long-term medication such as taking antiplatelet drugs, beta-blockers, ACEI drugs, statin lipid-regulating drugs, etc. Since atherosclerosis is a progressive disease of the systemic arterial system that occurs not only in the coronary arteries of the heart, but also in the cerebral arteries, renal arteries, aorta and lower limb arteries, etc., treatment against atherosclerosis is a long-term process.