Heart implantation stent is a way of coronary heart disease treatment, the pros and cons of which are as follows: 1. Pros: angina pectoris, myocardial infarction due to severe stenosis of blood vessels, fixed stent can improve the symptoms of angina pectoris, can restore blood flow, save myocardial cells, protect heart function, improve the long-term prognosis of patients, and even reduce mortality; 2. Cons: stent is a foreign body, which has certain effects in the blood vessels, such as restenosis in the stent, of which the bare stent The incidence is more than 30%, with the use of drug stents, the restenosis rate has decreased significantly, but still exists. In addition, after stent implantation, there is a risk of acute thrombosis, which requires long-term antiplatelet drugs.