With the aging of our population and changes in lifestyle, the incidence of degenerative scoliosis has increased significantly. Degenerative scoliosis is mostly caused by asymmetric degeneration of one or more intervertebral discs and synovial joints, and is more common in middle-aged and elderly people over 50 years of age, more women than men, and more often in the lumbar and thoracolumbar segments. Degenerative scoliosis is often associated with spinal stenosis, disc herniation, lumbar spondylolisthesis and other lesions, and patients are often accompanied by low back pain and deformity, and the clinical symptoms are more severe than those of simple lumbar spinal stenosis, so the treatment is more complicated than that of a single lumbar degenerative disease. The risk of surgery is relatively high in elderly patients because of more perioperative complications and often associated with different degrees of osteoporosis, more intraoperative bleeding, and a higher rate of loosening of postoperative internal fixation. Pain, deformity and nerve root compression are the main indications for surgery. The aim of surgery is to decompress the spinal canal, release the compressed nerve roots, restore the intervertebral space height and reconstruct the normal sequence of the spine. Specific indications for surgery are: 1. intermittent claudication, nerve root pain and neurological dysfunction; 2. lumbar instability and pain that seriously affects normal life and is ineffective with non-operative treatment; 3. muscle strain due to coronal and sagittal imbalance; 4. progressive worsening of scoliosis with annual progression10; 5. lateral displacement of the vertebral body by 3 mm and lumbar scoliosis by 30; 6. short segment angular scoliosis.