The lumbar spine is an important support structure of the human body. All factors and diseases that cause lumbar involvement may cause low back pain, and the common causes of low back pain include trauma, lumbar muscle strain, lumbar disc herniation and urinary stones. 1. Trauma: Lumbar vertebrae fracture, transverse process fracture and lumbar vertebrae slip or lumbar vertebrae soft tissue injury can cause lumbar pain due to direct or indirect violence, such as falls, car accidents, and falls. 2. Lumbar muscle strain: it is mostly aseptic inflammation caused by cumulative, mechanical, chronic injury or untimely treatment of acute sprain of lumbar muscles, fascia, ligaments and other soft tissues. Patients usually have back and lumbar pain. 3. Lumbar disc herniation: the herniated disc or nucleus pulposus compresses or stimulates the nerve root, resulting in radiating pain to the muscles in the innervated area, and patients usually have lumbago, leg pain, sciatica and other symptoms. 4. Urinary stones: If there are ureteral or kidney stones and other diseases, because the spasm of the ureter can cause severe back pain. It is accompanied by symptoms such as hematuria and vomiting. Lower back pain may also be caused by other reasons, such as muscle strain, ankylosing spondylitis, tumor metastasis and pleural and lung tumors and other diseases, if it does not get better after resting, it is recommended to go to the hospital in a timely manner to improve the relevant examinations, to clarify the cause of the disease and then give targeted treatment and therapy.