Walking lumbar pain sit down on the pain is considered for the lumbar back myofasciitis, lumbar disc herniation, lumbar spine tuberculosis and other reasons. 1. Lumbar back myofasciitis: long-term strain, sedentary, weight-bearing exercise can cause lumbar back muscles, fascia and other soft tissue oozing, swelling, aseptic inflammation, causing lumbar back pain, swelling, soreness, fatigue and other symptoms. The pain, swelling, soreness and fatigue of the lower back can be alleviated after resting. 2. Lumbar disc herniation: degenerative changes in the lumbar intervertebral discs, rupture of the annulus fibrosus causing the nucleus pulposus to bulge out and irritate the nerve root, causing pain in the lumbar back and radiating to the lower limbs. Excessive pressure on the lumbar spine when standing can further stimulate and compress the nerve roots, thus aggravating the pain. 3. Tuberculosis of lumbar vertebrae: Mycobacterium tuberculosis erodes the lumbar vertebrae and causes symptoms such as lumbar back pain, which may be accompanied by low-grade fever, fatigue, and other typical manifestations of tuberculosis infection. The lumbar vertebrae are damaged, causing a decrease in the weight-bearing capacity of the lumbar vertebrae, and when sitting down, the pressure on the lumbar vertebrae decreases, which can slow down the pain. Walking lumbar pain sitting down does not hurt, it is recommended to consult a doctor in time to clarify the diagnosis, under the guidance of the doctor for targeted treatment.