Sudden pain in the lumbar spine is considered to be related to disorders of the small joints of the lumbar vertebrae, lumbar disc herniation, lumbar sprain, bone fracture, and kidney stones. 1. Small joint disorder of lumbar vertebrae: sudden change from one position to another may appear lumbar pain, lumbar spine activity is limited, through the orthopedic massage symptoms can be reduced. 2. Herniated lumbar intervertebral disc: rupture of the annulus fibrosus, the nucleus pulposus protrudes through the ruptured annulus fibrosus and presses on the nerves, lumbar pain may occur, coughing or sneezing and other actions to increase the abdominal pressure may lead to pain aggravation, and some are accompanied by leg pain and leg numbness. 3. Lumbar sprain: lumbar muscle sprain can appear after the lumbar spine side pain, lumbar spine activities are limited performance. 4. Fracture: Lumbar spine fracture, may also appear acute low back pain, through the film can be clearly diagnosed. 5. Kidney stone: there may be sudden pain in the lumbar region, the pain is severe, can involve the small abdomen, accompanied by blood in urine. Sudden pain in the lumbar spine, if rest does not alleviate, it is recommended to go to the hospital in time.