1.There are many methods for early diagnosis of coronary artery disease. The accuracy of exercise nuclear myocardial perfusion imaging is the best, followed by exercise plate test, and the accuracy of general electrocardiogram is lower. Multi-row CT examination is to evaluate coronary artery lumen plaque and stenosis degree to evaluate coronary heart disease, and the accuracy of negative exclusion is high. If combined with exercise test and myocardial perfusion imaging for coronary artery disease, it can improve the diagnostic accuracy and avoid unnecessary coronary angiography. 2.Can multi-row (64 rows or more) CT replace coronary angiography? Therefore, if you have typical angina symptoms, but the degree of stenosis shown by coronary CT is relatively mild, it is recommended to review coronary angiography. Because coronary angiography is the “gold standard” for coronary artery disease diagnosis. 3.Do I need to implant a stent after coronary angiography? No, the doctor will decide whether it is necessary according to the result of coronary angiography. When the degree of coronary stenosis does not exceed 70%, it is not necessary to implant stent for the time being. 4.Does it mean that everything is fine after stenting? No, stent implantation only unblocks the most severely stenosed coronary artery, and only partially reconstructs blood flow. In addition, for vessels without stent implantation, such as critical lesions and mild stenosis, oral statins and other drugs are needed to prevent progression. 5.How to maintain the unblocked vessels after surgery? Postoperative dual antiplatelet therapy for at least 1 year is crucial, that is aspirin plus clopidogrel (or Tigretol) dual drug. Secondly, statin lipid-lowering medication is also very important.