Lumbar disc herniation causes pain in the caudal spine or is accompanied by pain in the caudal spine, the common reasons are as follows: First, lumbar disc herniation itself is accompanied by muscle tension, fasciitis and lumbar muscle strain, the lumbar muscle originally does not have enough protection for the intervertebral disc and the spine, and the damaged lumbar muscle is easily caused by pain in the lumbosacral region including the caudal spine when it encounters strain, cold or trauma, bad posture, etc. Second, the herniated lumbar disc not only stimulates the nerve roots, but also stimulates the lumbosacral nerves, that is, the nerves distributed above the lumbosacral and hip areas are stimulated, which will also cause pain in the sacrococcygeal spine. Third, lumbar disc herniation and caudal spine pain accompany each other, pay attention to caudal spine pain may be caused by other diseases, pay attention to whether there is local redness and heat, swelling, mass, exclude infection, avoid bad posture, if there are abnormalities need to be checked clearly and treated symptomatically.