Patients with chronic renal failure can survive for 40 years because, firstly, the medical term chronic renal failure may be different from the common people’s term chronic renal failure. In medicine, as long as there is an increase in blood creatinine and a decrease in glomerular filtration rate, it can be called chronic renal failure. However, chronic renal failure may refer to end-stage renal disease (ESRD), that is, uremia, which is often referred to as chronic renal failure by common people. Patients with chronic renal failure, such as blood creatinine in 100μmol/L, belong to the early and middle stage of renal failure, then as long as the active treatment, the patient may be delayed to the period of uremia, this period can be maintained to more than ten years or even decades are possible. Secondly, even if the patients have progressed from the early to middle stage of chronic renal failure to uremia stage, when entering into the uremia stage, the patients’ life can be prolonged by means of renal replacement therapy, and the general renal replacement therapy can maintain the patients’ life for more than 10 years. Therefore, it is very possible for patients with chronic renal failure to survive for more than 40 years.