Pain in the middle or lower abdomen is more likely to be caused by intestinal disorders, especially ileocecal disorders, which are characterized by pain in the right side of the lower abdomen, including inflammatory disorders such as appendicitis or appendicitis, and can be aggravated by overeating or eating unclean food. Fever, nausea and vomiting may also occur, and in severe cases, abdominal or pelvic fluid may be present, which may be characterized by an acute and severe sensation. For middle-aged and elderly patients, it can also be a malignant tumor of the intestines, with recurrent chronic abdominal pain, accompanied by loss of appetite and weight loss, and anemia. In severe cases, it may also manifest as intestinal obstruction, stopping anal defecation and bowel movement, and enteroscopy can further confirm the diagnosis. Therefore, after diagnosis, early radical resection surgery should be chosen, and regular colonoscopy review is also needed after the operation.