Lumbar collapse can be seen in a variety of reasons, the main reasons include physiological reasons, pathological reasons are common in scoliosis, trauma and so on. 1 Physiological reasons: physiological curvature of the lumbar spine can be manifested as lumbar collapse, generally without other symptoms. Long-term standing posture, sitting posture is not correct, easy to change the normal physiological curvature, can be accompanied by lumbar pain, lumbago and other symptoms, through the correction of posture can generally be restored. 2. Scoliosis: Scoliosis can also cause lumbar collapse, and at the same time, it can be observed that the two sides of the waist are asymmetrical, and one side of the depression is more obvious than the other. 3. Trauma: Trauma to the lumbar region and fracture of the lumbar vertebrae can be manifested as lumbar collapse, accompanied by lumbar pain and lower limb movement disorders and other symptoms. Lumbar collapse can also be seen in other reasons, it is recommended to go to the hospital in time, to clarify the cause of the disease, timely targeted treatment.