The causes of lumbar intervertebral disc herniation include degeneration of lumbar intervertebral disc, injury, lumbosacral congenital anomalies and so on. 1. Degeneration of lumbar intervertebral discs: due to ageing, the tissues of the body gradually degenerate, and the blood vessels around the intervertebral discs are gradually occluded, the intervertebral discs lack of nutrient supply, which leads to the slowing down of metabolic rate, and at the same time, the water content of the intervertebral disc tissues as well as the elasticity of the fibers decreases, resulting in the appearance of herniated disc. 2. Injury: due to work or other factors, maintaining a posture for a long time, resulting in long-term chronic wear and tear of the lumbar intervertebral discs, further aggravating the degree of degeneration, which in turn aggravates the lumbar intervertebral disc herniation. 3. Lumbosacral congenital abnormalities: congenital dysplasia of lumbar vertebrae can also lead to lumbar disc herniation, such as lumbar sacralization, asymmetry of the articular eminence, etc., coupled with chronic injury factors in later stages, which leads to increased lumbar disc stress and easier to herniate. There are other causes of lumbar disc herniation, such as genetic factors, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.