Back pain in the early hours of the morning may be caused by coronary angina, duodenal bulbous ulcer, nephritis, ureteral stones, muscle injury, lumbar disc herniation and other causes. 1. Coronary angina: the disease will cause back pain, usually patients with cardiovascular disease risk factors, pain in the activities, after a full meal, emotional excitement triggered, but also appear in the early hours of the morning back pain intolerable. 2. Duodenal bulb ulcer: the disease can also cause symptoms of back pain, usually ulcers in the posterior wall of the duodenal bulb can cause back pain, and there will be intolerable back pain in the early hours of the day. 3. Nephritis, ureteral stones: the disease can also lead to lower back pain, acute pyelonephritis manifested as lumbar pain or dull pain, ureteral stones manifested as a side of the lower back pain, can be accompanied by hematuria, will also appear in the early hours of the morning after the back pain intolerable. 4. Muscle injury, lumbar disc herniation: the disease can also cause back pain, muscle injury in addition to localized pain, often accompanied by muscle tension, pressure pain obvious. Back pain caused by lumbar disc herniation is often accompanied by numbness or pain in the lower limbs, but also back pain in the early hours of the morning. Back pain in the early hours of the morning every day may have other reasons, we should go to the regular hospital in a timely manner to clarify the cause and then standardize the treatment, so as not to delay the condition and miss the best time for treatment.