Lumbar disc degeneration and lumbar disc herniation are two completely different concepts. Lumbar disc degeneration refers to changes in the quality and properties of the lumbar discs with age and the effects of acute and chronic injury factors. This is reflected in a decrease in the water content and protein content of the lumbar disc, which can be shown as lumbar disc degeneration on MRI. The lumbar disc herniation is different. The lumbar disc herniation refers to the rupture of the fibrous ring and protrusion of the nucleus pulposus of the lumbar disc under the effect of various violent injuries, and the nerve injury symptoms of lumbar disc herniation can be produced by pressing the nerve, dural sac and spinal cord to the rear.