The causes of lumbar disc herniation include degeneration of lumbar intervertebral disc, injury, lumbosacral congenital abnormality and so on. 1. Degeneration of lumbar intervertebral disc: the aging performance of human tissues caused by increasing age or chronic injuries. After puberty, the blood vessels supplying the intervertebral discs are gradually occluded, and the intervertebral discs have become the largest non-vascular tissues of the human body, and the supply of nutrients relies on infiltration, and the metabolism is extremely slow, coupled with a gradual decrease in the water content of the tissues and the elasticity of the fibers, which leads to the protrusion of lumbar intervertebral discs. 2. Injury: Repeated external forces over a long period of time cause slight damage and aggravate the degree of degeneration, such as wrong sitting, standing and sleeping postures. 3. Lumbosacral congenital abnormality: due to congenital dysplasia and excessive external force intervention in the later stage, the lumbosacral is not healed throughout life. When the body is subjected to external forces, the lumbosacral is not healed and the force is concentrated here, which is subjected to excessive stress, resulting in lumbar disc herniation and consequently low back pain. There are other causes of lumbar disc herniation, such as genetic factors, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.