Women’s buttocks and waist joint is clinically known as lumbosacral region, and pain in this area: first of all, consider whether it is caused by lumbar disc herniation. Because the prolapsed nucleus pulposus of the lumbar spine will compress the adjacent nerve roots and sciatic nerve, resulting in obvious pain in the lower back, and clinically some patients will also have pain in the lower limbs, even numbness or limited movement. Secondly, consider whether the pain is related to retroperitoneal organ lesions, such as kidney and ureteral stones or inflammation, which are also clinically associated with symptoms such as hematuria, urinary frequency, urinary urgency and painful urination. Finally, consider whether there are gynecological diseases in women, such as common pelvic inflammatory disease and adnexitis, which can also cause pain in the lumbosacral area. Therefore, there are many clinical causes of pain in this area, so if you want to specify the cause, it is best to seek medical examination to confirm the diagnosis.