The causes of abdominal pain, which is normal, may be intestinal dysfunction, neuropathic pain, psychosomatic disorders, etc. They are summarized below: 1. Intestinal dysfunction Intestinal dysfunction is not an organic lesion, can lead to abdominal pain, diarrhea and other conditions, often due to autonomic dysfunction of the dominant intestinal tract, or intestinal flora imbalance, symptomatically given to regulate intestinal function of drugs, such as Trimethoprim maleate tablets, bifidobacteria capsules and other drugs to regulate. 2. Neuropathic pain If the examination of abdominal pain is normal, it may be caused by the neuropathy of the nerves innervating the abdomen, such as viral infection and other neuropathic pain. 3. Psychosomatic diseases Some anxiety disorders, neurosis and other psychosomatic disorders may appear somatization disorder, always feel pain in the abdomen, but there is no substantial disease. Need to regulate the mental psychological aspects. In short, if there is a small abdominal pain, there are a variety of reasons, should be under the guidance of the doctor to continue to observe the follow-up, improve the examination and treatment. Even if everything is normal in the examination, regular follow-ups should be conducted to observe changes in the condition.