MicroEndoscopic Discectomy (MED) is based on the posterior microdiscectomy, replacing the microscope with an endoscope and introducing a camera system, etc., so that the surgical operation can be completed under the direct vision of the endoscope without affecting the stability of the spinal column and the advantages of fast postoperative recovery, which is in line with the trend of development of minimally invasive spine surgery, and it is the most advanced system. MicroEndoscopic Discectomy is based on posterior microdiscectomy, replacing microscope with endoscope and introducing camera system, etc., so that the surgical operation can be completed under direct endoscopic vision without affecting the stability of the spine and the advantages of fast postoperative recovery, which is in line with the trend of the development of minimally invasive spine surgery, and it is the most advanced system at present. Lumbar disc removal surgery system Yang Cao, Department of Orthopaedics, Wuhan Union Medical College Hospital MED discoscopy surgery is a perfect combination of traditional open surgery and modern endoscopic minimally invasive technology, which has the same efficacy as the traditional open surgery, but also has the advantage of slight surgical trauma, which is one of the most ideal surgical procedures at present. Compared with traditional open surgery, MED discectomy has the advantages of small incision (only 1.6cm), less tissue trauma, less bleeding, less damage to spinal structure and stability, and rapid postoperative recovery. Compared with percutaneous puncture disc excision and suction, MED discoscopy has the advantages of direct visualization, avoiding the blindness of the operation and precise surgery, and it can carry out lateral saphenous fossa and nerve root canal enlargement, so decompression is thorough and the efficacy of treatment is higher; its scope of indications is wider, which is not only suitable for accommodative disc herniation, but also suitable for non-accommodative (i.e., prolapsing and free type); its posterior median approach also solves the problem of the L5~S1, interspace side posterior approach, which is the best solution for L5~S1, and the lateral posterior approach for L5~S1. Its posterior median approach also solves the problem of difficult puncture of L5~S1, the lateral posterior approach to the gap, and makes its puncture success rate reach 100%. The incision for discoscopy is about 1.5-2cm.