Microendoscopic Discectomy (MED) combines endoscopic minimally invasive techniques with traditional surgical techniques to remove the nucleus pulposus of the protruding intervertebral disc and deal with spinal stenosis under endoscopic surveillance. The principle of the operation and the access route are similar to that of the traditional surgery, which has become a common minimally invasive technique for the treatment of lumbar disc herniation and has the advantages of little damage to the normal tissue structure and less bleeding. It has the advantages of small damage to normal tissue structure, low bleeding, fast recovery, etc. It is gradually accepted by more and more doctors and patients. However, at present, the commonly used intervertebral discoscopy (MED) has the problems of limited field of vision and inconvenient operation. Minimally invasive spine surgery in the traditional discoscopy (MED) on the basis of the first in China to carry out movable spinal endoscopy technology (mobile endospine system) or movable MED technology (mobile MED, MMED) for the treatment of herniated intervertebral discs and spinal stenosis, to overcome the limitations of the traditional discoscopy technology, not only to remove the nucleus pulposus of the intervertebral disc, but also to carry out decompression of the nerve root channel and decompression of the nerve root channel and spinal stenosis. It not only removes the nucleus pulposus of the intervertebral disc, but also decompresses the nerve root channel and decompresses the spinal canal. Due to the convenient operation, the indications for the surgery have been expanded from simple disc herniation to spinal stenosis and recurrent disc herniation. The technology has the following advantages: (1) wide indications for the treatment of cervical and lumbar disc herniation and lumbar spinal stenosis; (2) high safety, enlarged microscopic field of view, can clearly distinguish the nerves and other tissues, reducing the risk of nerve damage; (3) removal of the lesion and decompression is complete, easy to deal with the free nucleus pulposus, etc., with precise efficacy, but also with the microscopic fibrous annulus suturing repair; (4) incision is small (about 50px), the muscle and bone, ligamentous Small incision (about 50px), muscle and bone, ligament damage, less bleeding, does not affect the stability, to avoid the complications of fusion of internal fixation; (5) fast postoperative recovery, short bedtime. At present, our hospital has carried out more than 1,000 cases of this surgery, with an excellent rate of more than 95%, and established the only domestic training base for this technology.