Laparotomy is a kind of treatment in which the central venous indwelling catheter is used as a temporary vascular access. If there is difficulty in defecation after the operation, it is usually related to the factors of little exercise, anesthetic reaction, postoperative intestinal adhesion, etc. Conservative treatment or surgical treatment can be taken according to the cause of the disease to alleviate the symptom. 1. Low exercise: If you lie in bed for a long time without moving around after the surgery, it will affect the normal peristalsis of the intestines, which will lead to the difficulty of defecation. It is recommended to get out of bed appropriately after surgery, which is conducive to intestinal peristalsis and relieve constipation. 2. Anesthetic reaction: If the anesthetic reaction is not completely metabolized, intestinal peristalsis will be easily blocked, resulting in normal bowel movement, generally the anesthetic reaction can be returned to normal after complete metabolism, and no special treatment is needed. 3. Postoperative intestinal adhesion: some patients may have intestinal adhesion after the peritoneal transillumination tube placement, which may affect the normal bowel movement. To address this factor, timely surgical resection of intestinal adhesions is needed to avoid causing intestinal obstruction. Difficulty in defecation after LDT, should first seek medical advice, analyze the cause of the disease under the guidance of the doctor, and then take professional treatment to control the progress of the disease, to prevent the occurrence of stubborn constipation.