There is no saying which one is better, peritoneal dialysis or hemodialysis for chronic renal failure, and the choice should be reasonable according to the patient’s condition. Peritoneal dialysis and hemodialysis are both important treatments for chronic renal failure, both have their own advantages and disadvantages and cannot be generalized. The advantages of peritoneal dialysis are that it can be done at home, which is relatively easy, and can be done continuously, and the toxin removal is relatively stable, which is better for the stability of the cardiovascular system; the disadvantages are that the incidence of infection related to the dialysis catheter is higher in the home treatment. The advantage of hemodialysis is that the efficiency of removing metabolic waste is relatively high; the disadvantage is that hemodialysis is a kind of intermittent dialysis, that is to say, every few days need to be dialyzed, so it is very easy to cause certain fluctuation to the body’s metabolic waste and blood volume, which also has a certain effect on the patient’s cardiovascular system, and the patients need to go back and forth to the hospital, which is relatively more troublesome. For some geriatric patients and patients with malignant tumors, or young patients who need to work and go to school, it is recommended to choose peritoneal dialysis. Patients without coagulation disorders can choose hemodialysis treatment. For patients who need dialysis, it is recommended to consult regular hospitals, and the specific type of dialysis needs to be selected under the guidance of doctors.