The causes of lumbar disc herniation include degeneration of intervertebral disc, injury and pregnancy. 1. Degenerative changes of intervertebral discs: with age, intervertebral discs will gradually degenerate, and disc rupture will easily occur under the action of external force and strain, resulting in intervertebral disc herniation. 2. Injury: Repeated bending, twisting, and prolonged sitting will cause lumbar disc injury and aggravate the load on the intervertebral disc, resulting in lumbar disc herniation. 3. Pregnancy: the force borne by the lumbosacral region during pregnancy is greater than that during non-pregnancy, which increases the load on the intervertebral discs, coupled with the fact that the lumbosacral ligaments are in a state of laxity during pregnancy, and the lumbar intervertebral discs are less stable, resulting in the risk of lumbar herniated discs in pregnant women increasing. Lumbar disc herniation is also related to heredity, lumbar sacralization, asymmetry of the articular eminence, etc. After the occurrence of lumbar disc herniation, patients should go to the hospital in a timely manner, and carry out regular treatment with the help of the doctor to alleviate the patient’s pain symptoms.