There is no standardized data on how long a diabetic patient can live with a stent. Diabetic patients who need stenting are usually patients with cardiovascular lesions, and patients with good heart function and mild stenosis generally do not affect their life expectancy after cardiac stenting. Patients with diabetic cardiovascular lesions who have good heart function, mild stenosis and good blood supply after cardiac stenting without massive infarction can actively cooperate with the doctor’s treatment, and even survive without affecting their normal life expectancy and have a better prognosis. However, patients with poorer heart function, more blocked blood vessels, and unsatisfactory postoperative results may have a poorer prognosis and a shorter life expectancy. Diabetic patients after stenting should actively cooperate with the doctor’s treatment, maintain stable blood glucose, and maintain a healthy lifestyle, which will help improve the prognosis. Seek medical attention when physical abnormalities occur.