Lumbar herniation is the abbreviation of lumbar disc herniation, which is the compression of lumbar disc herniation. Stimulation of the corresponding nerve roots causes a group of symptoms characterized clinically by low back and leg pain. The herniated disc is a benign lesion that does not necessarily need to be removed. The focus of treatment is how to eliminate the symptoms of lumbar pain caused by it, which is actually a common feature of many non-surgical treatments for lumbar herniation. The small needle cannot remove the herniated disc, and it is generally not advisable to enter the spinal canal because of the high risk. So how is it used to treat lumbar herniation? To answer this question, we must first understand how lumbar disc herniation causes back and leg pain. Generally speaking, it is the herniated disc that compresses the nerve roots and causes back and leg pain, and without dealing with the herniated disc, it is only possible to focus on the nerve roots. A piece of rope that is fixed at both ends is strained by an object in the center. The way to loosen the rope without moving the object is to loosen the fixation at one or both ends of the rope. The principle of small acupuncture for lumbar synostosis is similar to this. After the nerve root exits the dura, it is held medially by fibrous tissue and laterally at the intervertebral foramen by fine fibrous tissue at the base of the transverse process and extends outward as the sciatic nerve. Small needles can reach the intervertebral foramen and use the pushing and peeling method to loosen the fibrous tissue that fixes the nerve root, and the nerve root will be loosened a little; it can also loosen the tissues around the sciatic nerve and make the sciatic nerve retract slightly to the proximal side, and the nerve root will be loosened a little. When the nerve compression is relieved, the back and leg pain will also be relieved. The herniated disc will gradually atrophy with time due to dehydration. The clinical situation of lumbar herniation is that after a period of treatment, including surgical disc removal, the symptoms are relieved, but the pain in one or more places in the lower limbs of the buttocks, N fossa, and lateral calf cannot be eliminated for a long time. The small needle can effectively solve these problems. How is this to be understood? After the nerve root leaves the spinal canal, it divides into many small branches that are distributed throughout the lower extremities: lumbar, hip, lower leg and foot. A nerve also contains many very thin nerve fibers, also known as axons, which have a variety of functions, including nutrition, in addition to transmitting messages. Within the axon, there is a constant flow of material to and from the nerve in both directions, called axonal flow. When a superior nerve becomes entrapped for some reason, the impairment of axonal flow can lead to damage to the inferior nerve due to decreased resistance to surrounding tissue pressure, resulting in compression or pulling that would not normally cause nerve damage. This is medically known as double or multiple card syndrome. If the lower card is short or light, the lower card symptoms can be eliminated automatically after the upper card is released. If the inferior jam is longer or heavier, the inferior lesion will not be eliminated automatically even if the superior jam has been released because of the formation of adhesions, hyperplasia, and scarring and other changes. This is why after the nerve compression at the lumbar disc herniation is released, sometimes the pain `numbness’ in the hip, N fossa and lateral calf cannot disappear for a long time. In contrast, acupuncture can loosen the nerve compression at each place in the lower position and make the pain disappear. From this point of view small needle knife therapy is superior to other methods. Small acupuncture can be combined with other methods, such as tui na, acupuncture, and medicine to achieve better results.