Lumbar muscle strain generally does not cause leg pain, as follows: lumbar muscle strain is caused by overexertion or prolonged fixed posture, resulting in muscle tension and spasm in the lumbar region, and there will be soreness and pain in the lumbar region, but it does not lead to nerve compression, so it does not cause conduction dysfunction of the nerves in the lower limbs and cause clinical symptoms of leg pain. Most of the general causes of leg pain are lumbar disc herniation, lumbar back fibrous tissue inflammation, lumbar spinal stenosis, lumbar spondylolisthesis and other diseases. Lumbar strain can coexist with the above diseases, but the etiology is not lumbar strain, but the above diseases. Therefore, lumbar muscle strain usually does not cause leg pain, and patients can remove the clinical symptoms of lumbar muscle strain by strengthening the strength training of lumbar back muscles in general.