The interval between two cardiac stentings varies from person to person, and the second stenting is generally recommended to be done 1~3 months after the operation. Coronary atherosclerosis causes stenosis of the coronary arteries, when the diameter of the lumen is reduced by more than 70%, it will seriously affect the blood supply, when it is more than 75%, it is recommended to put a cardiac stent. Some patients have diffuse lesions in multiple vessels and require two stenting sessions, which are usually recommended 1 to 3 months after surgery. After stent implantation, antiplatelet agents such as aspirin, clopidogrel, and tegretol should be taken regularly under doctor’s supervision. In addition to this, patients should have a low-salt and low-fat diet, eat more fresh fruits and vegetables, try not to eat fatty meats, meat and oil, pickled foods, and control blood sugar, blood lipids and blood pressure. The implantation time of the stent should be carried out under the guidance of professional doctors, and the medication should be taken on time after the operation.