A bending pain upright nothing may be due to lumbar muscle strain, lumbar intervertebral disc herniation, lumbar vertebral body slippage and other reasons. 1. Lumbar muscle strain: patients with long-term posture or overwork, there may be a change in muscle form, resulting in lumbar muscle strain, when the patient is bending over, the length of the muscle tissue muscle fibers will change, resulting in pain. 2. Lumbar intervertebral disc herniation: If the patient suffers from lumbar intervertebral disc herniation, the spinal nerves in the body may be squeezed and stimulated when bending over, and there will be a pain when bending over and standing upright is fine. 3. Lumbar vertebral body slippage: Lumbar vertebral body slippage generally refers to the lumbar vertebral body between the neighboring body of the lumbar vertebrae to move significantly, which leads to nerve compression and irritation, appearing when bending over the pain of upright all right. It is recommended that patients should do a good job of keeping warm during the recovery process, and go to the hospital in a timely manner for related consultations.