Walking pouting upper body leaning forward may be due to lumbar sprain, lumbar dorsal myofasciitis, lumbar disc herniation and other reasons. 1. Lumbar sprain: refers to strenuous exercise, carrying heavy objects, sitting for a long time and then suddenly stand up, etc., can be due to the lumbar suddenly pulled by external forces, posture suddenly change the lumbar muscle spasms, soft tissue lacerations, joints dislocations and disorders and other injuries, resulting in pain in the lumbar region, the emergence of the activity, lumbar deformity, local pressure pain. In order to avoid pain aggravation, the upper half of the body to lean forward to reduce pain. 2. Lumbar back myofasciitis: edema, congestion, oozing and other aseptic inflammatory changes in the muscles and fascia of the lumbar back caused by dampness, cold and long-term strain, thus causing lumbar back pain, muscle spasms and numbness of the skin. 3. Lumbar disc herniation: the nucleus pulposus of the lumbar intervertebral disc prolapses due to improper posture, which can irritate and compress the nerve root, leading to numbness, pain, swelling, weakness and other symptoms in the lower limbs. Walking pouting upper body leaning forward there are many other reasons, it is recommended to consult a doctor in a timely manner in order to clarify the diagnosis, under the guidance of the doctor for targeted treatment.