The most common cause of lumbar spine soreness, numbness or muscle strain, long-term because of poor posture, such as long-term low desk work, bending weight or squatting work, including driving can cause lumbar spine strain, lactic acid accumulation and lumbar muscle pain, numbness caused by lumbar muscle stiffness and wood. Other diseases can also cause the lumbar spine to feel numb and stiff, such as herniated discs, spinal stenosis, osteophytes, osteoporosis, and lumbosacral arthritis. If it cannot be relieved or persists after rest, it is better to go to a regular hospital for examination. Other internal diseases, such as abdominal pain, gastroenteritis or urinary tract infections, stones and gynecological inflammation, can also reflexively cause a feeling of swelling and numbness in the lower back, all accompanied by other symptoms, so it is better to go to the hospital for a clear examination and then treat the symptoms.