In clinical work, according to the pathological changes as well as CT and MRI imaging results combined with treatment methods, the herniated disc is divided into four types: 1, bulging type: partial rupture of the annulus fibrosus, protrusion of the nucleus pulposus into the spinal canal under pressure, generally smooth surface, after conservative treatment can be relieved; 2, herniated type: rupture of the annulus fibrosus, protrusion of the nucleus pulposus into the spinal canal, but no breakthrough of the posterior longitudinal ligament, the clinical can try to first 3, prolapse free type: rupture of the annulus fibrosus, protrusion of the nucleus pulposus into the spinal canal, easily causing cauda equina nerve compression caused by cauda equina syndrome, requiring surgery; 4, Xu Mo’s nodule: protruding nucleus pulposus through the upper and lower cartilage plate into the vertebral body, generally only lumbar pain, after symptomatic treatment can also be relieved. The outer tire is equivalent to the fibrous ring in the human intervertebral disc, and the inner tire is equivalent to the nucleus pulposus in the intervertebral disc. When the outer tire thins due to long time wear, the inner tire will bulge through the worn outer tire when it is fully inflated and under certain pressure, which is equivalent to a bulging disc herniation because the outer fibrous ring is partially destroyed and the nucleus pulposus is under pressure. This is equivalent to the bulging disc herniation, where the outer fibrous ring is partially destroyed and the nucleus pulposus is under pressure, and this type can often be cured with conservative treatment. When the outer fetus has a rupture, the inner fetus passes through the rupture under pressure and protrudes from the rupture, this type is equivalent to the herniated type of clinical disc herniation, and most people can get relief after conservative treatment; if conservative treatment is not effective, surgery can also be performed. When the pressure of the inner fetus is too high, so that the inner fetus passes through the rupture of the outer fetus and part of the inner fetus is free outside the outer fetus, this type is called free prolapse type, which refers to the rupture of the fibrous ring, the nucleus pulposus protrudes out through the rupture of the fibrous ring, and there are free fragments fall into the spinal canal, this type often causes the compression of the cauda equina nerve and cauda equina syndrome, which will lead to urinary and fecal dysfunction, this type in clinical This type is often treated clinically with surgery.