Peritoneal dialysis and hemodialysis have their own advantages and disadvantages, there is no which one is better, only more suitable for different groups of people, it is recommended to follow the doctor’s advice to choose, for example, peritoneal dialysis is more suitable for small weight women with good residual renal function. Peritoneal dialysis is not as good as hemodialysis in removing water and metabolic wastes, but it has less impact on the cardiovascular system. If the patient has good residual renal function and can eliminate a certain amount of water and metabolic wastes, together with peritoneal dialysis, the patient can have a good quality of life, especially for women with small body weight who do not produce much metabolic wastes, it is more suitable. In addition patients in remote areas where it is inconvenient to go to the hospital for hemodialysis can also choose peritoneal dialysis. Hemodialysis is more capable of removing metabolic waste and water, and it is performed intermittently for four hours three times a week, so the water and metabolic waste content in the body fluctuates a lot, which has a certain effect on the cardiovascular system, and it is more suitable for patients who have a lot of body weight and produce a lot of metabolic waste, especially for those who have become anuric. Patients with kidney failure should go to the hospital in time and choose the appropriate dialysis method under the guidance of professional physicians.