Peritoneal dialysis generally relies on the function of diffusion and convection, which is particularly suitable for which patients, first, for example, a small child who needs to go to school, may put four bags a day, and when not going to school, put abdominal dialysis fluid at home; second, suitable for elderly people with unstable cardiovascular function, because abdominal dialysis does not require the use of substances such as heparin, so it is suitable for the elderly; third, is the establishment of arteriovenous internal fistula is not suitable for patients or patients with poor vascular conditions Fourth, such patients are suitable for peritoneal dialysis; fourth, for example, patients who travel or travel frequently, they can carry peritoneal dialysis solution with them or go to buy peritoneal dialysis solution locally for treatment; fifth, patients with high demands on life can choose peritoneal dialysis, which is suitable for patients with bleeding or poor coagulation function, because peritoneal dialysis does not require the use of heparin, but uses the principle of their own peritoneum, so it is not suitable for patients with bleeding or After the use of heparin, patients who are allergic or unable to tolerate it are suitable for peritoneal dialysis. As long as there are no contraindications, all patients can practice peritoneal dialysis, according to their own choice and needs, and then according to some recommendations from their doctors.