Post-exercise lumbar soreness may be due to over-exercise, lumbar muscle strain, lumbar spine injury and so on. 1. Exercise excess: Exercise excess or long time bending weight, can cause excessive lumbar lactic acid, cause lumbar soreness and pain after exercise. 2. Lumbar muscle strain: prolonged strenuous exercise, lumbar weight bearing or incorrect force, easy to cause lumbar muscles and their fascia, ligaments and even periosteum of the chronic injury inflammation, manifested as lumbar soreness and swelling pain, intermittent, or in severe cases, persistent. In case of strain, there are fixed pressure points in the lumbar region. 3. Lumbar spine injury: lumbar intervertebral disc herniation, lumbar spinal stenosis, lumbar spine slippage and other diseases can cause lumbar soreness and discomfort, activity limitation and so on. Post-exercise lumbar pain may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.