The common causes of pain in the buttocks and lumbar spine include exertion, lumbar spine disease, spinal disease and so on. 1. Exhaustion: If you suddenly perform a lot of strenuous exercise, the whole body is in a state of tension, muscle contraction is excessive, may cause pain in the buttock lumbar spine, usually can be relieved after rest. 2. Lumbar spine disease: lumbar disc herniation, lumbar spinal stenosis, etc. can be due to compression of the nerve root, and cause radiating pain in the lumbar and hip area, resulting in buttocks and lumbar spine activity limitation and pain. 3. Spinal diseases: Ankylosing spondylitis, spinal tuberculosis and other spinal diseases can cause pain in the spine and radiate to the lumbar and hip pain. Buttock lumbar pain may also be caused by other reasons, if the pain is severe or persistent, you should promptly go to the hospital, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.