Chronic renal failure can live about 10-20 years. Once kidney disease enters the chronic kidney failure stage, the detoxification and drainage capacity of the kidneys have been reduced, toxins will accumulate in the body, causing damage to various organs, and the function of each organ will decline, affecting the survival life of patients. However, chronic renal failure is divided into five grades according to its severity, the first grade is the least severe and the fifth grade is the most severe, which is often referred to as the uremic phase. From the first grade to the fifth grade, it may take 2-3 years for the fast ones and 5-6 years for the slow ones. Once in the uremic stage, long-term hemodialysis treatment is required. From the start of hemodialysis to death, it takes about 10 years, some longer. So, combined with the above time to calculate, patients with chronic renal failure can live about 10-20 years. If the patient belongs to the beginning stage of chronic renal failure, that is, belongs to stage I, the survival time is relatively long; if belongs to stage V of chronic renal failure, that is, the uremic phase, the survival time is relatively short.