Cardiac stenting is a common treatment for severe coronary artery disease. It involves the use of cardiac catheterization technology to place a metal stent into the patient’s coronary stenosis in order to prop up the diseased part of the blood vessel and ensure that this part of the ischemic myocardium regains perfusion and maintains normal metabolism and function without ischemic necrosis. Stenting technology has saved many critically ill patients and is a leap forward in cardiovascular technology. However, it is not a basic treatment for coronary artery disease, but a “last resort” treatment. If coronary vascular lesions can be effectively treated with drugs, stenting cannot be considered because it is risky, costly, invasive, technically demanding, and not a technology that hospitals at all levels can accomplish. And there is a certain rate of restenosis. Doctors are very strict and careful in choosing the indications. Only the following patients are suitable for the application of cardiac stenting: 1. Acute myocardial infarction (large area), the stent must be used to open the acutely occluded coronary artery to prevent massive myocardial necrosis. Because the drug cannot open the vessel quickly, the myocardial cells cannot tolerate several hours of ischemia. 2, chronic angina is ineffective after systemic drug treatment, or frequent attacks, the imaging identified a serious local coronary stenosis, then stent treatment. The symptoms will be significantly improved after the stenosis is released. 3.Patients with enlarged heart, reduced cardiac function and arrhythmia caused by myocardial ischemia should consider stent treatment after systemic regular drug treatment is ineffective. Only by improving blood supply can myocardial metabolism and function be protected. First coronary angiography, which is clear that it is an important localized lesion of coronary artery, should be treated with stent. Therefore, patients should have regular electrocardiogram, cardiac ultrasound and cardiac function check. Where the angiogram reveals diffuse coronary lesions, stents cannot be used because stents can no longer improve the symptoms, and the only option for diffuse coronary lesions is cardiac bypass therapy. To use a common phrase: stents are life-saving, and they should be used when they are needed. The heart muscle is life. But stenting is not a once-and-for-all approach, and medication must still be adhered to. After stenting, we should apply coronary dilation drugs, anticoagulants, blood-vitalizing drugs and lipid-lowering drugs, all of which are indispensable, because the coronary arteries are very long and stenting is only to support a small section of blood vessels, and other blood vessels will still have lesions. Please understand the doctor, understand the treatment, cooperate with medical treatment, choose the right treatment at the right time, enjoy the advanced medical achievements, but do not abuse the wrong use, the maximum benefit, recovery smoothly.