Low back pain and leg numbness may be due to nerve compression by a herniated lumbar disc, and the numbness is usually involved from the back of the thigh to the lateral calf and left back. It may also be lumbar spinal stenosis, which is accompanied by symptoms such as claudication of the lower extremities, and the numbness is likely to occur mainly after walking a certain distance. In addition, lumbar spinal tuberculosis accompanied by cold abscesses compressing the nerves is also possible, and this condition is accompanied by symptoms of tuberculosis infection such as hot flashes, night sweats, loss of appetite, and weakness. Other causes, such as lumbar spine tumor compression and lumbar spine slippage, can be examined by magnetic resonance examination of the lumbar spine, which can basically determine the cause. If it is a non-serious lumbar disc herniation, it can be treated conservatively first, with as much bed rest as possible, together with blood activation and blood stasis treatment such as blood circulation and pain relief capsules. If it is a serious organic lesion compression, it is necessary to consider surgery to release the compression, and postoperative treatment with nutritional nerve treatment such as methylcobalamin.