Abdominal pain after thoracolumbar spine surgery may be related to surgical trauma, retroperitoneal hematoma stimulation, constipation and other reasons. 1. Surgical trauma: thoracolumbar spine surgery itself will produce a certain amount of damage to the body, first of all, the choice of anesthesia, thoracolumbar spine surgery is generally selected general anesthesia, general anesthesia, the intestinal tract and its glands will be in a state of inhibition, postoperative bloating, abdominal pain and other gastrointestinal dysfunction may occur, and can be recovered on their own. 2. Retroperitoneal stimulation: vertebral surgery is often taken to the posterior surgery, vertebral anatomical position in front of the intestinal or retroperitoneal organs, surgery and postoperative exudate, hematoma and other factors may stimulate the abdominal cavity after the sympathetic nerves, resulting in abnormal intestinal peristalsis, abdominal pain, abdominal distension and other manifestations. 3. Constipation: most patients need to stay in bed for a long time after the operation, the activity is reduced, and the amount of food is reduced, which will lead to the slowing down of intestinal peristalsis, constipation, and cause abdominal distension, abdominal pain and other symptoms. Thoracolumbar postoperative abdominal pain may also have other causes, it is recommended to report to the doctor, identify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.