Low back pain is a group of common clinical symptoms, its etiology is complex, diverse clinical manifestations, seriously affecting the patient’s life and work. Etiology and classification: 1, the most common injury, including spinal fracture, vertebral body slippage, intervertebral disc herniation, lumbar soft tissue acute and chronic injury. 2, Long-term cumulative strain. 3.Degenerative changes are another common cause of lumbar pain, including osteoporosis, lumbar osteoarthritis, small joint disorders, spinal stenosis, hypertrophy of ligamentum flavum. 4.Spinal tuberculosis, pyogenic spondylitis, strong spontaneous spondylitis, rheumatoid arthritis, myofascial fibrous tissue, radiculitis, epidural infection, etc. 5.Scoliosis, spina bifida and other developmental abnormalities. 6.Spinal tumor. The nature of pain: lumbar and leg pain can be divided into 1, localized pain, mostly manifested as a fixed pressure point. 2, involving pain, also known as reflex pain, the pain site is more vague. Radicular pain is a characteristic manifestation of nerve root damage, with pain radiating along the damaged nerve root to the endings, with typical signs of sensory, motor and reflex damage. Treatment: In most cases, low back pain can be relieved or cured by non-surgical treatment, and sometimes surgical treatment is required. Prevention: Effective prevention can avoid or reduce the incidence of low back pain, such as adopting reasonable labor posture, upright sitting posture, avoiding single posture for too long, lumbar and back muscle exercise, etc., to participate in strenuous exercise before the preparatory activities.