Chronic renal failure is a disease in which multiple primary or secondary renal diseases progress progressively, causing impairment of renal function and the appearance of corresponding clinical symptoms. The life expectancy of patients with chronic renal failure without treatment is mostly 1-2 months. If actively treated with hemodialysis or peritoneal dialysis, the life expectancy can be maintained for 10-15 years, or even longer. If kidney transplantation is treated surgically, it can also last for about 10 years in the absence of rejection. Thus, chronic renal failure, the specific survival time varies from person to person. Patients should pay attention to rest in their life, and develop good habits, actively cooperate with the doctor’s treatment, and have an optimistic and positive attitude.