Age increases the incidence of sudden cardiac death and age is one of the risk factors for sudden cardiac death. Sudden cardiac death (SCD) is defined as accidental, nonviolent natural death caused by various cardiac causes. Age is a risk factor for sudden cardiac death, and the risk of sudden cardiac death increases substantially with age, with those aged ≥60 years having a higher risk of sudden cardiac death. The reason for this is related to a series of physiopathological changes caused by a significant decline in the reserve capacity and stress capacity of the body in the elderly population on the one hand, and on the other hand, due to the prevalence of coronary atherosclerotic lesions in the elderly population, which are often accompanied by insufficient blood supply to the myocardium, a decrease in the number of mitochondria supplying energy to the myocardium, and impaired membrane potentials, which leads to the elderly becoming a high-risk group for sudden cardiac death.