Junior children always say lumbar pain, mainly common in the following two reasons: first, may be due to lumbar muscle strain caused by pain, because junior children are more intense in school, usually need to sit for more than 12 hours a day, will lead to lumbar muscles for a long time in a state of tension, a long time naturally easy to lead to the formation of damage, eventually forming lumbar muscle strain, resulting in pain in the waist. Secondly, it is possible to form a lumbar disc herniation because of long hours of sitting, sitting posture may not be correct, making the lumbar disc under greater pressure, and eventually form a lumbar disc herniation.