The need for stenting in patients with 70% to 90% stenosis of the right coronary artery should be considered in the context of the patient’s symptoms and response to drug therapy. In patients with a single coronary artery stenosis greater than 70%, stenting may be withheld if angina can be effectively controlled with standard pharmacologic therapy. For patients with a single coronary artery stenosis greater than 70%, stenting is indicated to prevent myocardial infarction if they have activity-induced angina or equivalent symptoms and do not respond well to drug therapy. Coronary artery stenosis should be treated under the guidance of a physician, and it is recommended to go to the hospital if you feel unwell to avoid delays and serious consequences.