Dialysis for renal failure patients is to help patients expel harmful metabolic substances and water from the body, etc. The survival time of such patients is closely related to the patients’ physical condition and there are individual differences, and the longest survival time for dialysis patients with renal failure is currently reported to be 35 years. With the improvement of dialysis technology and economic level, the average life expectancy of most renal failure patients has increased. If the kidney failure patients have no other complications and the dialysis effect is better, the average survival time of these patients can be several years, decades, and even some of them can live to a normal life expectancy. If the patients not only have renal failure disease, but also have cardiovascular system and other diseases, such as coronary heart disease, this part of the patient’s life time will be affected, survival time varies from person to person. In addition, in addition to actively cooperate with dialysis, patients with kidney failure should pay more attention to diet control, avoid eating seafood, spicy and stimulating food, eat less salt and avoid lung infection.