If the patient is in acute renal failure, the kidney function can be restored by dialysis treatment, and then the dialysis can be stopped, if it is chronic renal failure, long-term dialysis treatment is needed, the following specific analysis. Renal failure is divided into acute renal failure and chronic renal failure. Acute renal failure is caused by reduced renal blood flow, urinary tract obstruction and other reasons. Acute renal failure is treated with dialysis, if the treatment is timely, the kidney function can be restored, and the kidney function can be restored to stop dialysis. If the patient is in chronic renal failure, it is due to the development of chronic glomerulonephritis and other diseases. If the chronic renal failure reaches the uremic stage, the kidney function has been lost and the glomerulus has irreversible damage and necrosis, which requires long-term dialysis treatment.