The causes of lumbar disc herniation pain are as follows: 1. There are two kinds of intervertebral disc compression, one is compression of the dura, and under the dura is the spinal cord. In addition, it is compression of the nerve root, which is directly stuck to the nerve line, a mechanical compression. When the compression is produced, there will be nerve ischemia and hypoxia state, producing nerve pain, if the stimulation of the dura is heavy, the patient produces back pain, if the compression of the nerve root is heavy, or nerve myelin, the patient will produce leg pain; 2, lumbar disc herniation will have exudate components, which will lead to inflammation and pain; 3, in the spinal canal or lateral saphenous fossa, protruding disc or nucleus pulposus is excess material, the organism has to exclude out, is an immune response, or rejection reaction.