Because the implanted stent is a foreign body, there is a possibility of thrombosis or restenosis at the stent implantation site, so it is necessary to adhere to the regular anti-platelet aggregation treatment, i.e., to adhere to the post-operative clopidogrel and baiaspirin duplex anti-platelet aggregation, generally the course of clopidogrel is at least 1 year after surgery, while baiaspirin is emphasized to be taken for life. Because of the effect of both of these drugs on platelet accumulation, close attention should be paid to any bleeding from the skin and mucous membranes, and blood tests should be reviewed regularly. Among them, Bay aspirin may also cause damage to the gastric mucosa and even gastrointestinal bleeding, so if you have stomach discomfort, you should also add omeprazole acid suppression and stomach protection treatment. 2, hypertension, diabetes, hyperlipidemia, obesity, smoking are all susceptible factors of coronary heart disease, such as lowering blood lipids and quitting smoking. Therefore, blood pressure and blood sugar must be strictly controlled after stenting. Blood pressure should be controlled at 130/80mmHg. ACEI and ARB are preferred as they can reverse myocardial fibrosis and protect myocardium, followed by B-blockers, such as betalactam, which can slow down ventricular rate and reduce myocardial oxygen consumption. This can greatly reduce the damage to the vascular endothelium after hyperglycemia and reduce the risk of thrombosis; at the same time, statins should be routinely taken to intensify lipid-lowering therapy to stabilize the plaque and at the same time avoid the reappearance of lipid deposits in the blood vessels to block the lumen. It is better to review liver function and blood lipid in one to two months during the period. If chest tightness and chest pain occur again after stent implantation, patients should be highly alert to the recurrence of coronary heart disease and need to be re-admitted to the hospital for coronary angiography to clarify whether there is intra-stent thrombosis or intra-stent restenosis. 4.Patients after stenting should develop healthy habits, have a good routine, avoid overwork and emotional excitement, emphasize on quitting smoking and alcohol, and at the same time can do appropriate physical exercise according to their ability, such as walking, Tai Chi, etc. Coronary heart disease patients should pay more attention to their diet, should not eat too much greasy and spicy food, so as not to increase the burden on the heart, affecting the recovery after stent surgery, it is recommended that you should pay attention to a light diet, eat more fruits rich in vitamin C, as well as green vegetables. 5, although the stent is stainless steel alloy, but the electromagnetic interference is very small, most of the current stent can do MRI and airplane ride.