Peritoneal dialysis is a kind of renal replacement therapy, with the current level of dialysis in China and the current status of patient survival, the average survival of peritoneal dialysis patients have about 15 years, even if they enter into uremia, they can still live for another 15 years after they start to do peritoneal dialysis. Generally, patients with uremia need to do peritoneal dialysis, and when entering peritoneal dialysis, it is important to change the dialysis fluid regularly every day at regular intervals, as well as to carry out strict aseptic operation to prevent the emergence of peritonitis. Regularly go to the hospital to evaluate the peritoneal balance test to see the peritoneal function, evaluate the condition of dialysis based on creatinine, urea, and body edema or albumin indexes, and adjust the dialysis prescription according to the results. The usual diet should be low-salt, low-fat, high-quality protein diet as the principle, to avoid increasing the burden on the kidneys.