The recovery time of dialysis for acute renal failure is variable, it may take three months, it may take half a year. Dialysis for acute renal failure can be stopped when it achieves the effect, and patients should follow the doctor’s advice when treatment. Acute renal failure is treated by hemodialysis, which helps the kidneys to excrete the excess excess and toxins from the body, so that the kidneys can rest and recover. The exact recovery time is variable and may take three months or six months, depending on the degree of acute renal failure, the patient’s cooperation in treatment, the presence of complications, and the presence of primary diseases. When acute renal failure restores urine to 2000ml/24h through dialysis, and the kidney recovers part of its function, the frequency of dialysis can be started to be reduced, or even dialysis treatment can be stopped slowly, and other treatments can be taken until the acute renal failure is cured, and the kidney is restored to health. When patients with acute renal failure need dialysis treatment, they must follow the doctor’s instructions to complete it, and cannot stop dialysis without authorization, so as not to delay the condition.