The age requirements for kidney transplantation are one for the patient and one for the donor. Currently, the age requirement of patients is more relaxed than in the past. Strictly speaking, anyone within 65 years of age can have a kidney transplant as long as they are a suitable match. In fact, the strictest age requirement should be the one who provides the kidney. The kidney has a natural decay ratio, the glomerulus and kidney units, decay at a rate of 1% per year, so the older the person who provides the kidney, the worse the result of the kidney provided. Therefore, when choosing a kidney donor, it is important to choose one who is relatively healthy, young and strong, and has no obvious tumors, infectious diseases, and other medical history. In short, the younger the age of the party providing the kidney, the more desirable it is, and the younger the party receiving the kidney, the greater the desire for kidney replacement. Older patients, who cannot give up, can be considered for kidney transplantation as long as there is a suitable kidney source.