There are several possible causes for stomach and waist pain: first, urological diseases, when the kidney has stones going down, through the ureter stuck in the ureteral stenosis, there can be pain in the waist, often colic, can be paroxysmal intensification, and at the same time can reflexively appear abdominal pain, then the urological ultrasound and urological imaging for diagnosis, early lithotripsy drugs and lithotripsy treatment. Second, pelvic diseases, when pelvic tumors or pelvic effusion, pelvic inflammatory disease can appear stomach pain, at the same time can be accompanied by lumbar pain, then there can be a feeling of abdominal cramps, pelvic ultrasound, CT, nuclear magnetic examination for early diagnosis and treatment.