The left side of the lumbar spine has been in pain for more than a year after the fall, which is mainly caused by lumbar spine fracture, lumbar disc herniation, lumbar degeneration and hyperplasia, and other reasons. 1. Lumbar spine fracture: lumbar spine fracture occurs in the lumbar fall injury, the height of the vertebrae compression is large, without the use of surgical reset treatment, the later stage can affect the stability of the spinal region, easy to make the lumbar region has been pain. After this kind of situation occurs, surgical treatment should be given priority to, such as anterior lumbar spine surgery, posterior lumbar spine surgery and so on. 2. Lumbar disc herniation: the disc injury caused by a fall causes the nucleus pulposus to compress the spinal cord or nerve roots, resulting in constant pain years after the fall. Symptoms can be alleviated through lumbar traction, physical therapy, etc., together with non-steroidal anti-inflammatory drugs such as ibuprofen and neurotrophic drugs such as methylcobalamin tablets, etc. Surgical treatment is needed when symptoms are obvious, such as nucleus pulposus removal of the intervertebral disc. 3. Degeneration of lumbar vertebrae: Bone damage occurs after a fall and fracture in the lumbar region, causing premature degeneration of bone and osteophytes in the later stage, which can easily irritate the surrounding soft tissues, thus causing pain in the lumbar region. Usually can be under the guidance of the doctor through the lumbar hot packs, physical therapy and other therapies, and with the use of drugs to reduce symptoms, such as celecoxib capsules, glucosamine sulfate capsules. 4. Other reasons: after a fall, the lumbar region is overstressed for a long time, which can easily cause muscle spasm, edema and inflammatory reaction of the fascia, thus causing pain in the lumbar region for many years. Lumbar left side of the pain after a year after the fall, need to consult a doctor in a timely manner, and actively perform appropriate treatment.