Coronary intervention, or stenting, is one of the treatments for coronary heart disease, and it is a treatment method developed in recent years. In fact, stenting is not necessary for most patients with coronary heart disease, but only very critical patients can benefit from stenting. Interventional treatment for patients with common stable angina can only relieve angina symptoms, not reduce death, not reduce the occurrence of myocardial infarction, and not prolong life. Only high-risk patients with unstable angina can benefit from interventions. Acute myocardial infarction (ST-segment elevation type of ECG) should be operated as soon as possible when chest pain is evident within 12 hours, but drug thrombolysis can also be applied, otherwise it is unnecessary or may be harmful to the patient if the time window has passed. Coronary heart disease medication is the most fundamental, taking a stent or bypass should only be the last resort.