The most common causes of back pain after waking up are over-exercise, muscle strain, back fasciitis, trauma, osteoporosis, etc. If the symptoms persist, it is recommended to seek medical treatment in time. 1. Excessive exercise: patients who have been engaged in strenuous activities during the day, causing lactic acid buildup in the back muscles, may produce back pain after waking up, which can usually be relieved after sufficient rest. 2. Muscle strain: people engaged in long-term heavy physical labor, it is easy to cause muscle fiber damage, cold stimulation at night may appear in the wake of back pain, may also be muscle long time to maintain a posture, causing pain. 3. Fasciitis of the back: usually associated with repeated wear and tear of the back fascia, muscles, is a sterile inflammation, inflammation attacks can cause back pain. 4. Trauma: Back pain can be caused by collision of the back, ligament, muscle, bone injury or fracture, and it is necessary to go to the hospital for X-ray examination in time to exclude fracture. 5. Osteoporosis: usually occurs in the older population, middle-aged and elderly people due to bone loss, easy to cause osteoporosis, back pain, and some people may have fragility fracture or fatigue fracture, can also cause back pain. Causes of back pain after waking up more reasons, may also be related to ankylosing spondylitis, spinal stenosis, spondylolisthesis, scoliosis, osteoarthritis, lumbar disc protrusion, rheumatoid arthritis, gout, heart disease, tumors and other diseases, if there is no relief after resting, it is recommended that the cause of the disease to be identified in time to the hospital, the doctor targeted treatment.