Myocardial infarction is still dangerous after stenting, and in-stent thrombosis and in-stent restenosis may occur. Patients with myocardial infarction who have stenting are not always at risk. Poor lifestyle habits and failure to take medication on time after stenting may result in in-stent thrombosis and in-stent restenosis, and the patient may have another myocardial infarction and jeopardize his or her life. Patients with myocardial infarction who have had stent surgery should reduce the occurrence of accidents by taking diametric antiplatelet drugs, such as aspirin and clopidogrel, for a long period of time, six months or one year after the stent surgery. For high blood pressure patients need to take antihypertensive drugs, such as nifedipine, nimodipine. Patients with high blood sugar take hypoglycemic drugs, such as metformin and insulin. Vascular stenosis need to take drugs such as simvastatin and nitroglycerin to control risk factors and further reduce the risk of cardiovascular disease. After myocardial infarction stent surgery usually need to develop good living habits, diet as low as possible low-fat low-sodium low-sugar, quit smoking and drinking, weight control, appropriate exercise, avoid staying up late. After myocardial infarction stent surgery, we should go back to the hospital for regular checkups to see if there is any progress in the diseased blood vessels or the stent patency, and to deal with any abnormality in time.