Low back pain inhalation are common in the following causes: 1, serious lumbar spinal stenosis: nerve root canal stenosis and central spinal stenosis can lead to severe pain in the lumbar region, inhalation can make the abdominal pressure increase, pressure transfer to the lumbar spinal canal will make the nerve pressure aggravated, nerve ischemia and hypoxia, there will be severe pain symptoms. 2, urinary system stones: such as ureteral stones, kidney stones, etc., if inhalation can also increase the abdominal pressure , making repeated contact between the stone and the mucosa of the kidney and the mucosa of the ureter, inducing clinical symptoms of pain. Even when there is no inspiration, there will be pain, spasm and tension in the lower back. Therefore, if this clinical symptom appears, it must be diagnosed and treated early in order to get rapid relief of clinical symptoms. Otherwise, the patient cannot live and work normally or even participate in sports.