Peritoneal dialysis is being chosen by more and more patients with end-stage renal failure, but it has its drawbacks, and improper care can easily lead to peritonitis. Therefore, when patients are on peritoneal dialysis at home, in addition to strict adherence to aseptic practice, the requirements for the patient’s home environment are also very important. The main points are as follows: a. The place where dialysis solution and dialysis supplies are placed should be fixed, and less clutter should be placed in the peritoneal dialysis room. The room should be washed at least once a month if there are curtains and bedding. B. No pets, such as cats, dogs, rabbits, etc., should be kept at home. Third, when changing dialysis fluid, prohibit others from walking back and forth next to it, and should be done in a clean, well-lit place. IV. Stop cleaning half an hour before operation to avoid dust flying in the air. Before each operation, you should wear a mask, wash your hands carefully and close doors, windows, air conditioners and fans. Fifth, the operating surface of the fluid exchange is cleaned once a day, sprayed with 75% alcohol before each operation, to be dried and placed in the abdominal dialysis fluid exchange with objects. Sixth, disinfect the air with ultraviolet light once a day. If you are a patient with end-stage renal failure who is ready to choose peritoneal dialysis treatment or is undergoing peritoneal dialysis treatment, pay attention to the above points, the chance of contracting peritonitis will be reduced and you can get a better quality of life.