Lumbar spine detachment is medically known as lumbar spine slippage, and its symptoms are initially localized lumbar pain, and some patients experience symptoms such as lumbar pain or even inability to stand upright due to changes in the normal force line and normal alignment structure of the lumbar region. First of all, it is localized lumbar pain, and if lumbar spinal slippage causes nerve compression, corresponding symptoms of nerve compression will appear, such as pain, soreness and numbness in lower limbs, or corresponding symptoms such as secondary spinal stenosis and intermittent claudication. Therefore, the clinical symptoms include two aspects, one is the local back pain, and the other is the nerve compression symptoms in the lower limbs. The “flashing waist” in life is generally due to incorrect force on the waist, resulting in local lumbar muscle strain and muscle soft tissue injury, while lumbar spondylolisthesis is due to changes in the normal force line and normal alignment structure of the waist, and the difference between the two is large. The final difference is based on imaging findings as the basis for diagnosis.