Pain in the left lower extremity attached to the buttocks is considered more likely to be caused by a lumbar disc herniation. The patient may also experience numbness and even abnormal sensation in the lower extremities, which is due to the herniated nucleus pulposus compressing the spinal nerve roots, thus causing a series of clinical discomfort. The cause of lumbar disc herniation is mainly related to weight bearing and strain. The other is that with age, there is also bone degeneration, bone aging, and degenerative changes, which can also predispose to this condition. Mild cases can be improved by conservative treatment methods, such as traction, hot compresses, acupuncture and massage, as well as oral pain relief and nerve-nourishing drugs, commonly used drugs are aminoglutethimide tablets combined with B vitamins. In severe cases of spinal stenosis, the most effective treatment is surgery to decompress the spinal canal and remove the nucleus pulposus, as well as general treatment in general.