How often peritoneal dialysis is performed varies according to the individual’s condition, usually once every 4-6 hours during the day and once every 10-12 hours at night. Peritoneal dialysis simply means using the patient’s own peritoneum as a semi-permeable membrane and injecting dialysis fluid into the peritoneal cavity to achieve solute exchange between the dialysis fluid and the blood, as well as to remove metabolic wastes, maintain water-electrolyte and acid-base balance, and remove excess water. Peritoneal dialysis is usually performed three to four times during the day, each time for 4-6 hours, and once at night, for 10-12 hours. The exact number of times and the duration of stay need to be adjusted individually, but in general the principle of achieving optimal solute removal and fluid balance, and preserving the residual renal function as much as possible should be adhered to. Peritoneal dialysis patients are recommended to go to regular hospitals in time and standardize the treatment under the guidance of doctors.