Low back pain accompanied by buttock pain can be caused by the following reasons: first, low back myofasciitis, patients with low back myofasciitis can have symptoms of low back myofascial pain, which can be accompanied by buttock pain at the fascia, especially when cold and tired, low back pain and buttock pain symptoms are more obvious, this time to early physical examination and examination to exclude other diseases to diagnose. Second, kidney deficiency, kidney deficiency can also have lumbar pain, while radiating to the hip fascia pain, this time to the Department of Traditional Chinese Medicine pulse diagnosis, early treatment of kidney medicine. Third, rheumatoid, rheumatoid can involve the lumbar spine and lead to lumbago, and at the same time can have pain above the buttocks at the sacroiliac joint, then we should check the sacroiliac joint, lumbar spine x-ray and blood tests to diagnose. Fourth, ankylosing spondylitis, ankylosing spondylitis patients can have back pain, buttock pain symptoms, there can be sacroiliac joint and lumbar stiffness, this time to early examination of the sacroiliac joint, lumbar spine X-ray and blood tests to diagnose and early treatment.