Minimally invasive endoscopic technique: Minimally invasive endoscopic surgery involves the insertion of a 1.6 cm diameter working tube around the paravertebral muscles. Due to the minimally invasive technique, the paravertebral muscles are not stripped and the supraspinous and interspinous ligaments and most of the superior and inferior articular processes and the unbroken fibrous ring and posterior longitudinal ligaments are preserved, maintaining the stability of the spine. Advantages of the minimally invasive endoscopic technique: The minimally invasive endoscopic technique is accomplished by making only a 1.6-cm-long incision; it results in less trauma, less bleeding, mild postoperative pain, and facilitates postoperative recovery, usually by walking on the ground the first day after surgery and being discharged from the hospital 3-5 days after surgery. Almost all procedures suitable for conventional incision can be replaced by endoscopic techniques. ●Surgical time is about 1 hour; ●No sutures are required and no stitches need to be removed. ● High satisfaction of efficacy: less postoperative pain, self-care of urine and stool, and easy care; ● You can walk on the ground on the 1st day after surgery; ● You can be discharged from the hospital in 3-5 days after surgery, shortening the time to return to work; ● The unique 5-stage dilated canal expansion technique is used to establish surgical access from the muscle gap without stripping the paravertebral muscles and biting off a large number of vertebral plates, preserving the biomechanical structure of the spine and not affecting the stability of the spine; ● High safety performance: the surgery is performed through the display screen and magnifies the surgical field 64 times, the nerves and blood vessels are clearly visible; ● Complete treatment is not easy to recur: it can remove the nucleus pulposus cleanly and completely and perform the release of nerve roots, which is not easy to recur after cure.