Abdominal pain above the thigh root can be caused by many reasons: first, consider the cause of calcium deficiency, involving pain. Second, pain in the abdomen involving the upper thigh, such as appendicitis or other gynecological diseases, pelvic inflammatory disease, ovarian inflammatory disease, and urethritis, cystitis, such pain in the abdomen. Third, consider patients with liver ascites or liver tumor ascites, due to abdominal distension involving the root of the thigh. Fourth, lumbar spine diseases, some patients can not distinguish whether it is abdominal or lumbar pain, and the pain in the lumbar area involves the pain in the root of the thigh.