In clinical practice, lumbar disc herniation and lumbar disc bulge are generally used as the diagnostic name of the disease, and as for slippage, it is generally said that there is slippage between the vertebrae, and it will not be said that the lumbar disc is slipped or prolapsed. Lumbar disc bulge and protrusion mainly depends on the integrity of the intervertebral disc’s fibrous ring. If the annulus fibrosus ruptures and the nucleus pulposus within the disc protrudes through the fissure into the spinal canal, it is generally called a lumbar disc herniation. If the annulus fibrosus is intact, but only due to degeneration or a decrease in the strength of the annulus fibrosus, and thus a mild bulge into the spinal canal, it is called a lumbar disc bulge, and there may be a difference in the symptoms and severity of the two. Spinal vertebral slippage, mainly refers to the front and back displacement between the two vertebral bodies, the emergence of spinal instability, often leading to symptoms of back pain, and in severe cases can also produce nerve irritation symptoms, the two lesions are not the same site.