1.Local anesthesia, the patient is conscious during the whole operation and can communicate with the doctor throughout. 2.The skin incision is only 8mm, and the surgical working channel is 7.5mm, which is a real minimally invasive surgery. 3.After successful percutaneous puncture from the lateral and lateral lumbar vertebrae, the surgical working channel is directly inserted into the intervertebral disc or the spinal canal through the intervertebral foramen, and the protruding or prolapsed intervertebral disc causing pressure is directly removed under the endoscopic visualization. 4.The operation does not destroy the important ligamentous structures of the lumbar spine and has no significant effect on the stability of the lumbar spine. 5.No need to pull the nerve root and dural sac, no obvious harassment to the nerve tissue in the spinal canal, no obvious bleeding and adhesions in the spinal canal. 6.The day after surgery or the next day, you can go to the ground. It is one of the minimally invasive surgeries with the advantages of small surgical trauma, short postoperative bed time, lower surgical cost and faster recovery.