Cardiac bypass surgery and cardiac stenting are both methods of treating coronary artery disease, and it is impossible to compare which one is better because of their different indications. 1. Cardiac stenting: it is suitable for patients with asymptomatic myocardial ischemia or mild angina. If one or two vessels are found to be obstructed during coronary angiography, and the obstructed vessels are important and close to the root, intracoronary stenting can be chosen as the treatment. 2. Cardiac bypass surgery: It is suitable for patients whose symptoms of myocardial ischemia cannot be controlled by treatment and whose coronary artery lesions are diffuse, stenosis is relatively heavy, and the location of the lesions is relatively important, which is unsuitable for stenting, and can only be done by bypass surgery. In addition, when the patient after stent surgery, the stent within the stent again stenosis, or the original vascular lesions aggravated, can only choose to do bypass grafting. It is recommended that patients pay attention to rest and avoid exertion. If there is any discomfort, consult a doctor in time, and the doctor will decide the treatment method according to the patient’s own situation after completing the relevant examinations.