Pain on both sides of the rear waist in women may have the following causes: 1, physiological factors: pain on both sides of the rear waist may occur during the physiological cycle, such as premenstrual pelvic organs congestion, edema, compression of the sacral nerve, causing pain in the lumbosacral region, as a normal physiological phenomenon, with the menstrual cycle has a clear relationship, usually after appropriate rest, a certain amount of physical therapy, hot compresses, can be significantly relieved; 2, lumbar muscle strain: the lumbar muscles are richer The lumbar muscles are mainly used for support and fixation, if long-term engagement in some excessive labor leads to lumbar muscle strain, there will be pain in the back, which needs active treatment, such as physiotherapy, hot compress, baking electricity, acupuncture, etc.; 3, urinary system diseases: there are more important organs in the lumbar region, such as ureter, kidney, etc., pain may be caused by ureteral stones, nephritis, etc.; 4, gynecological diseases: such as endometriosis, giant ovarian cysts, enlarged uterus due to uterine fibroids, adenomyosis, etc., which present pelvic compression symptoms and cause lumbosacral pain. There are physiological and pathological factors that cause pain on both sides of the rear waist in women, so they should go to the hospital in time for a clear diagnosis and then treatment.