The reason for the hidden pain at the suture site of duodenal rupture may be related to wound infection, residue, scar hyperplasia, intestinal adhesion, and unhealed perforation. 1. Wound infection: If the suture site is infected after surgery and the inflammation is not controlled in time, abdominal abscess will appear, and the patient will have hidden pain from time to time, which may also be accompanied by fever. 2. Residue: If there is tissue residue in the area, the residue and the surrounding tissues are not compatible with absorption, which will cause pain and discomfort. 3. Scar hyperplasia: If the patient belongs to the scarred body, or scar hyperplasia occurs during the recovery process, it will cause pain. 4. Intestinal adhesion: after surgery, due to infection and other conditions, may cause intestinal adhesion, hidden pain. 5. Unhealed perforation: If the duodenum rupture suture perforation, perforation site is not completely healed, gastric and intestinal fluids may flow into the abdominal cavity again, causing pain. It is recommended that the patient consult a doctor in a timely manner to clarify the cause of the disease and strictly follow the medical advice.