Lumbar disc herniation can be divided into three types: bulging, protrusion, and prolapse. Lumbar disc herniation is a diagnosis of Western medicine, and Chinese medicine does not have this disease name. Instead, the disease is classified as "low back pain" and "low back and leg pain". This disease is one of the more common lumbar diseases in clinical practice, and is a common and frequently occurring disease in orthopedics. It is mainly because the various parts of the lumbar disc (nucleus pulposus, annulus fibrosus and cartilage plate), especially the nucleus pulposus, have different degrees of degenerative changes. Under the influence of external factors, the annulus fibrosus of the intervertebral disc ruptures, and the nucleus pulposus tissue protrudes (or prolapses) from the rupture to the back or in the spinal canal, causing adjacent tissues, such as spinal nerve roots, spinal cord, etc., to be stimulated or compressed, resulting in a series of clinical symptoms such as low back pain, numbness and pain in one or both lower limbs.