There are many different types of lumbar disc herniation, the common ones are as follows: First, the differentiation is based on the specific location of the herniation, for example, it can be divided into central, paracentral, collateral and extreme lateral types, the main basis of this typing is to determine the relative relationship between the site of the herniation and the spinal canal. Second, according to the relative relationship between the site of protrusion and the nerve root, it can be divided into root-shoulder type, heel-axillary type and root-front type. Third, according to the specific degree of herniation of the nucleus pulposus, for example, it can be divided into augmented type, that is, bulging, ruptured type, that is, protruding, and free type, that is, completely prolapsed. Fourth, according to whether the site of lumbar disc herniation can be returned, it is divided into reversible or irreversible herniation.