Lumbar disc herniation is a common and frequent disease in orthopedics, and is one of the most common causes of back and leg pain. The disease is most common in young adults, often troubling the work, study and life of patients, and in serious cases, there may be urinary and fecal dysfunction. The causes of lumbar disc herniation are many, in summary, about the following: 1, degenerative lesions of the lumbar intervertebral disc, that is, with the increase in age intervertebral disc degeneration, will cause small changes such as vertebral joint instability, loosening. 2, chronic injury, such as unreasonable sitting, long-term repeated external force caused by ligament damage around the intervertebral disc. 3, intervertebral disc anatomical factors, that is, the intervertebral disc in adulthood gradually lack of blood circulation, on the basis of this, exogenous causes increased pressure on the intervertebral disc, so that the nucleus pulposus through the less tough fiber ring, resulting in nucleus pulposus protrusion. 4, genetic factors, i.e., the phenomenon that there are other people in the family with this disease; 5, congenital anomalies of the lumbosacral region, such as: lumbosacralization, hemivertebral deformity, small joint deformity and joint asymmetry, etc. Degenerative injury caused by excessive pressure on the intervertebral disc. 6.Traumatic injury. Such as sudden drop, car accident injury, etc. induced sudden increase in intervertebral disc pressure leading to nucleus pulposus protrusion. 7, female pregnancy and perinatal period is likely to induce or aggravate disc protrusion. In summary, lumbar disc herniation can occur at any age. There are also many causes of lumbar disc herniation. Only by being clear about these causes of disease can we play a preventive health care role.