There are several possible causes of lumbar pain in the back of women: first, lumbar muscle strain, when there is a lumbar muscle strain, there can be chronic injury to the lumbar muscles and lead to lumbar pain, it is necessary to carry out relevant tests to exclude other diseases for diagnosis. Second, lumbar myofasciitis, lumbar myofasciitis patients can also appear lumbago. Third, kidney disease, when the kidney inflammation or tumor, can also appear symptoms of lumbago, then we should carry out ultrasound, CT and urine tests of the kidney for diagnosis. Fourth, gynecological diseases, when there is pelvic inflammatory disease or pelvic effusion, the symptoms of lumbago can also appear, then ultrasound and CT examination of the pelvis should be performed for diagnosis and treatment.