Tail root with small stomach pain may be caused by pelvic inflammation, neuropathy and tumor growth. Because of the anatomical relationship between the root of the tail and the lower abdominal pain sensory nerves are prone to tugging pain, in addition to the cause of trauma, there may also be the following factors: 1. Pelvic inflammatory disease: Pelvic inflammatory disease mainly includes the inflammatory reaction of the uterus, fallopian tube, ovary and the tissues around the pelvis. Therefore, when acute pelvic inflammatory attack, it will cause the neighboring organs as well as muscles, fascia and other inflammatory stimulation pain, which in turn leads to the root of the tail with a small stomach pain. 2. Neuropathy: due to trauma, lumbar intervertebral herniation compression of the nerves, women may have lesions of the cauda equina, which may easily lead to cauda equina syndrome, thus resulting in the symptom of pain in the root of the tail with a small stomach. 3. Tumor growth: If there is tumor growth in the sacrococcygeal area or pelvic area of women, it is easy to produce direct occupying effect and oppress the surrounding tissues, thus triggering the symptom of pain in the tail root with small stomach. If the patient has pain in the stomach, it is recommended to go to the hospital in time to find out the cause of the disease and then targeted treatment.