The most common causes of back pain in girls are lumbar intervertebral disc herniation, lumbar dorsal musculoskeletal inflammation, pelvic inflammatory disease, urinary tract infection, etc. If the symptoms of back pain in girls persist, it is recommended that they seek medical treatment in a timely manner. 1. Lumbar intervertebral disc herniation: if girls usually do not pay attention to sitting, the degenerative changes in the lumbar spine will form lumbar intervertebral disc herniation, compression of the surrounding soft tissues, nerves, which will produce pain in the lower back. 2. Lumbar dorsal musculoskeletal inflammation: women who have long term weight bearing on the lower back, lumbar muscle strain, cold stimulation, it is easy to cause lumbar dorsal musculoskeletal inflammation, this is a kind of sterile inflammation, usually overworked or cold can be triggered by the lumbar pain. 3. Pelvic inflammatory disease: If the female patient’s pelvic cavity is infected, it may induce pelvic and uterine congestion, which in turn involves the pain in the lower back. 4. Urinary tract infection: the urethra of a girl is relatively short, it is easier to cause the urethra to be infected, which can also cause pain in the lower back of the involvement. Causes of lumbar pain in girls more causes, but also may be associated with lumbar muscle strain, lumbar spondylolisthesis, osteoarthritis, kidney stones and other diseases, if there is no relief after resting, it is recommended to go to the hospital in a timely manner to find out the cause of the disease, by the doctor targeted treatment.