The causes of persistent abdominal pain are more varied and complex, and are generally common in the following areas: First, it may be due to long-term chronic inflammation of the gastrointestinal tract, including chronic gastroenteritis, duodenal ballooning and various ulcer diseases, colorectitis, etc. Chronic long-term inflammatory stimulation can lead to persistent abdominal pain, sometimes accompanied by diarrhea, constipation and other alternating conditions. Second, it may be caused by inflammation of the mesenteric lymph nodes or incomplete intestinal obstruction, which is more common in children. Thirdly, in women, it may also be due to recurrent long-term pelvic inflammatory disease. Chronic pelvic inflammatory disease may also cause persistent lower abdominal pain and sometimes a sensation of falling. Fourthly, the symptoms of malignant tumors are not excluded. Therefore, for persistent recurrent abdominal pain, it is important to go to a regular hospital for detailed examination to find the exact cause.