The number of years one can live after cardiac stenting is importantly related to the patient’s own underlying disease, whether he or she takes anticoagulant drugs on time and in the right amount, and whether there are lifestyle interventions and improvements, etc. There is no exact clinical time point. Patients treated with cardiac stenting have a better prognosis and a better quality of life than patients with coronary stenosis or a similar degree of disease who do not receive stenting. Post-operative patients can greatly extend their survival period and even live like normal people if they follow medical advice to take antiplatelet coagulation and other therapeutic drugs on time and in the right amount, combine with lifestyle improvement and achieve regular review. Therefore, cardiac stent itself does not affect life expectancy, but if the patient also suffers from other underlying diseases, his or her life expectancy will be relatively shortened. After cardiac stenting, it is important to take anticoagulant medication regularly and quantitatively, and not to stop or change medication without authorization, and to pay attention to diet regulation, which should be low in salt, fat and cholesterol.