Normally you will be able to have a bowel movement one to two days after peritoneal surgery, up to a maximum of three days, although this varies from person to person. How soon you can have a bowel movement after peritoneal surgery has a lot to do with your own bowel function. Typically, you will have a bowel movement within 12 hours and a bowel movement within 24 hours. Those with poorer bowels can have a bowel movement in up to three days. If there has been no bowel movement, constipation may also occur, which needs to be treated under the guidance of a doctor. You can eat more liquid food, some food that helps digestion, and if necessary, you can take medication to help defecation, such as lactulose. Has not been no gas, no bowel movement, you can also get out of bed, appropriate walking exercise, promote intestinal peristalsis, so as to achieve the purpose of defecation. After the peritoneal surgery, you should pay more attention to rest, eat more nutritious and easy to digest diet, and you can do proper exercise every day to promote the recovery of gastrointestinal function and the recovery of the wound.