Common causes of peritoneal infections include contamination due to careless operation of peritoneal dialysis fluid exchange, intestinal bacterial translocation due to intestinal origin factors, and catheter tunnel infection spreading to the peritoneal cavity, so prevention is important. In particular, the following aspects should be noted in daily life: 1. The concept of asepsis: abdominal dialysis is a therapeutic operation performed by the patients themselves, which requires strengthening the aseptic technique of the abdominal dialysis process. Usually, each abdominal dialysis center will train new patients in the seven-step lavage technique and fluid exchange operation. Despite the knowledge of relevant aseptic concepts, it is still necessary for the patients themselves to perform strictly in the long-term fluid exchange operation, neglecting any of the steps has the potential risk of infection. 2. Avoid constipation and intestinal infections: constipation and diarrhea caused by improper diet can lead to the transfer of intestinal microbial infiltration to the peritoneum, resulting in peritonitis. Therefore, patients should pay attention to dietary hygiene, avoid overeating and the use of spicy food, try to eat more food containing high fiber such as vegetables, corn, buckwheat, etc.. Try to maintain good bowel habits and take medications to increase bowel movements or laxatives if necessary. Moderate exercise is also good for increasing the peristaltic function of the stomach and intestines. If the patient has diarrhea and other symptoms should be given full attention, timely treatment to avoid intestinal infection and peritoneum. 3, strengthen the catheter outlet care and personal hygiene: it is recommended that abdominal dialysis patients daily care of the outlet of the abdominal dialysis catheter, care should not be forced to remove the outlet crust, pay attention to the protection of the outlet when showering, try to avoid the occurrence of exit infection and tunnelitis. Antibiotic treatment should be administered promptly in case of infection at the relevant site. Patients are advised to bathe and wash their heads regularly to maintain personal hygiene. 4, maintain a good home environment: daily air disinfection should be carried out, air conditioning vents should be cleaned regularly, avoid keeping pets at home, abdominal dialysis fluid exchange location should be away from the wind and windows. 5, nutritional status: good nutritional status is conducive to maintaining normal immune function, abdominal dialysis patients usually need to eat protein as a supplement because of the daily loss of albumin from the abdominal dialysis fluid, the recommended daily protein intake is 1.3g / day, of which at least 50% is high-quality protein.