According to different conditions, low back pain is classified as follows: according to the pathological anatomy, pathophysiology and clinical treatment, it is divided into two categories: spinal disease low back pain and non-spinal disease low back pain; spinal disease low back pain, which can be divided into two categories: traumatic and non-traumatic. According to the lesion site and etiology, it can be divided into two categories of medical low back pain and surgical low back pain. 1, medical low back pain: that is, visceral diseases involved in lumbar pain. Such as gastrointestinal diseases, urinary system diseases, central nervous system diseases and systemic infectious diseases, etc. 2, surgical low back pain: it is low back pain caused by different causes of injury to the bones and tendons of the waist. It can also be divided into two categories: acute and chronic low back pain. (1) Acute low back pain Spinal injury: lumbar disc herniation, posterior joint disorder, ligament injury, spinal fracture, misalignment, etc. Lumbar and hip tendon injuries: lumbar and dorsal fascia tears, sacrospinous muscle, superior gluteal nerve, pear-shaped muscle injury, sacroiliac joint sprain, etc. (2) Chronic low back pain Postural low back pain ① poor spinal posture; ② excessive pelvic tilt; ③ poor posture of lower limbs (hip and knee inversion, flatfoot, congenital hip dislocation) Chronic inflammation of bone and joint: hypertrophic spondylitis, rheumatoid spondylitis, septic spondylitis, vertebral or adnexal tumors, tuberculosis, sacroiliac arthritis, vertebral epiphyseal chondritis, posterior arthritis, pseudoarthrosis formation of the lumbosacral and iliac bones, etc. Congenital malformations: stable spina bifida, migrating vertebrae, fused vertebrae, posterior articular surface abnormalities, spinous process abnormalities, arch isthmus discontinuity, hemivertebrae, etc. When patients are seen, in addition to acute injuries, symptoms have continued for months, years, or have had multiple episodes. It is important to ask about the presenting symptoms and to trace them back to the first episode. Some patients cannot think of any reason for the onset of symptoms, while others have a history of cold and dampness, overexertion, or twisting and flashing of the back. Symptoms may occur suddenly or slowly, may be continuous or intermittent, may be mild or severe, or may be related to climate change.