Women with lower abdominal pain accompanied by lumbago consider the following causes: i. Reproductive system diseases, commonly uterine fibroids, ovarian tibial torsion, and even ectopic pregnancy. In addition to accompanying lower abdominal pain, it will be followed by involving pain accompanied by lumbar discomfort, so ask in detail whether menstruation and leucorrhea are normal. Second, lower abdominal pain with lumbar pain, to exclude the lower colonic gastrointestinal tract, such as whether it is accompanied by intestinal tuberculosis, inflammatory bowel disease, or even abdominal painful irritable bowel syndrome, etc. will appear lower abdominal pain, lumbar pain, some patients will also be accompanied by abnormal bowel movements, such as pus and blood, mucus stool and other conditions. Third, to exclude urinary system problems, in addition to involvement pain, if there are also symptoms such as urination, urethral discomfort, urinary urgency and frequency when urinating, also to exclude urinary system problems. Therefore, women with sudden lower abdominal pain and low back pain should go to the hospital, and the doctor will choose gynecological ultrasound, colonoscopy, urine, stool and other corresponding laboratory tests to further clarify the diagnosis according to the status of the medical history.