Soreness in the lower back and legs is considered to be caused by lumbar spine pathology, such as muscle strain, lumbar disc herniation, lumbar spinal stenosis. Usually too much exercise or often engaged in heavy labor can appear lumbar and leg muscle strain, soreness symptoms. Symptoms can be reduced by resting, usually avoiding labor and paying attention to keep warm. Lumbar disc herniation is due to lumbar degeneration, the nucleus pulposus protrudes through the ruptured annulus fibrosus and compresses the nerves, which can cause lumbar and leg pain, and in some cases numbness of the lower limbs, which can be diagnosed clearly through lumbar MRI films. Lumbar spinal stenosis can also present with the symptom of lumbar and leg pain, and in severe cases, the patient may have a walking limp. Therefore, consider the above causes of lumbar leg pain, and treat for the cause.