Lumbar disc herniation is primarily due to degeneration of the lumbar disc or secondary pathological changes caused by this degeneration, which then stimulate blood vessels, nerve roots, and the spinal cord, leading to a series of clinical symptoms. Lumbar disc herniation is categorized into four types. The mildest type is the bulging type, followed by the protruding type, the more severe extrusion type, and finally the most severe, the sequestration type. Generally, lumbar disc bulging is relatively mild and conservative treatment is usually effective. Depending on the site and degree of compression, lumbar disc herniation may be treated conservatively, but some cases require surgical intervention. Most cases of disc extrusion require surgery because the extrusion leads to spinal stenosis, compressing all or part of the blood vessels, and it can also compress the spine and nerve roots, causing irreversible damage, and medications or massages can't reverse the condition. The fourth point concerns lumbar disc prolapse, meaning the nucleus pulposus falls into the spinal canal through the tear. This is one of the few emergencies seen in spinal surgery. If this occurs, immediate surgical treatment is necessary. Therefore, the severity of lumbar disc herniation mainly depends on the type and degree of the herniation, as well as the location and direction of the herniation, and which treatment method needs to be used.