Small abdominal pain to check the problem may be indigestion, pelvic inflammatory disease, irritable bowel syndrome and other causes. 1. Indigestion: if cold, improper diet, expired food, etc., may lead to gastrointestinal dysfunction, abdominal bloating, abdominal pain and other symptoms of indigestion. 2. Dysmenorrhea: If women have dysmenorrhea, it may also lead to pain and discomfort in the lower abdomen, but the examination can be without organic lesions, and it can be improved after the end of menstruation. 3. Irritable bowel syndrome: Irritable bowel syndrome is a functional bowel disease characterized by abdominal discomfort or pain, accompanied by changes in bowel habits. In addition to abdominal pain, it is usually accompanied by dyspareunia and increased frequency of bowel movements. If the patient has long-term abdominal pain, it is important to go to the hospital as soon as possible, under the guidance of the doctor to improve the examination, to clarify the cause of the disease, and to carry out targeted treatment.