First, gynecological diseases. When gynecological diseases such as pelvic inflammatory disease or pelvic effusion occur, pain in the small abdomen can occur, accompanied by lumbar pain, which can be accompanied by lumbago. Second, pelvic tumor, when the pelvic tumor, can also appear lumbar pain, accompanied by pain in the small abdomen, then the pelvic magnetic examination to diagnose and treatment. Third, urinary system diseases, when the kidney has a stone, downward travel can be stuck in the ureteral stenosis, thus appearing lumbar colic, can be radiated to the small abdomen, then it can be accompanied by the symptoms of hematuria, then the urological ultrasound, imaging examination to diagnose and treat.