When exactly does a patient need to undergo cardiac stenting? It should be affirmed that for patients with coronary artery disease, cardiac stenting is an emergency measure to relieve coronary atherosclerosis, which can give the heart a new lease of life and is a very good means of treating coronary artery disease. However, whether and when to put it in, this must be based on the different clinical conditions of the patients. First, patients can observe for themselves whether angina attacks are becoming more frequent, whether the duration of the attacks is getting longer, whether the way of inducing angina is getting closer and closer to daily actions, and whether the methods of relieving angina are getting more and more complicated, and so on. Secondly, cardiography is performed, and cardiac stenting is also required if cardiovascular stenosis of 75% or more is found, or if cardiovascular stenosis of 50% or more is found, if there is a full course of pathology, and if you suffer from diabetes mellitus. In addition to this, be sure to consult with a specialist you trust so that they can determine whether or not the procedure is needed.