The main problems that women can’t bend with lumbar pain are the following: 1. lumbar muscle strain or third lumbar transverse synovial syndrome, mainly due to cold or strain leading to muscle ischemia, hypoxia, and lactic acid accumulation, causing aseptic inflammation, resulting in lumbar pain with restricted bending activities. 2. lumbar disc herniation, due to disc degeneration leading to nucleus pulposus protrusion, compression of the posterior nerve and resulting in lumbar pain. The pain can be manifested as lumbar pain with limited bending activities, and the pain can be aggravated by bending activities, which can be clarified by lumbar MRI. 3. lumbar interspinous ligamentitis, which is caused by excessive bending activities and trauma, manifested as repeated jamming of tendons and ligaments, resulting in pain, which is more obvious when bending activities, which can be clarified by lumbar MRI. 4. urinary tract diseases, including urinary stones and infections. 5. Gynecological diseases, including ovarian inflammation, ovarian cysts, tubal inflammation and other lesions, may manifest as pain in the lumbar abdomen with restricted activity and increased vaginal discharge, and can be clearly diagnosed by ultrasound of the uterine adnexa.