Lumbar disc herniation and spinal stenosis are common and frequent clinical diseases. The main symptoms are inability to stand upright, limb numbness, pain, lower limb weakness, which may lead to paralysis in severe cases. With the development of society, the progress of the times, and the increasing intensity of work, spine-related diseases have been on a rapid rise year by year, while the age of onset has been on a downward trend. Traditional treatments mainly use non-surgical treatments such as traction, closure, needle-knife release, immobilization and braking, manipulation and massage, physiotherapy and other non-surgical treatments and open surgical treatments, which play an important role in relieving patients’ pain. However, with the overall quality of the nation and the continuous improvement of the standard of living, the above means of treatment can no longer meet the needs of the masses, and the technical level of people’s understanding of the clinical diagnosis and treatment of spinal diseases has also been updated requirements: the treatment process is fast, less painful, less traumatic, does not affect the aesthetics, postoperative clinical symptoms and functional recovery, and the long-term therapeutic effect of good recurrence rate is low; the emergence of these requirements, a strong impetus to the rapid development of clinical treatment means of spinal diseases. The emergence of these requirements has given a strong impetus to the rapid development of clinical treatments for spinal diseases, forcing the diagnosis and treatment of spinal diseases to enter a brand new field —– minimally invasive era of spine treatment. Traditional minimally invasive techniques include: collagenase dissolution, percutaneous cutting and suction, laser vaporization (PLDD), plasma myeloplasty, radiofrequency ablation, ozone ablation, etc. However, these methods, which are also minimally invasive techniques carried out by most of the hospitals at present, belong to the indirect decompression, and have the defects such as not being able to directly remove the diseased nucleus pulposus, especially the tissues that oppress the nerves, and not being able to repair the broken fibrous ring, and relying on the body’s natural absorption of the necrotic tissues, etc. The results are not good. The necrotic tissue needs to be absorbed naturally by the human body and other defects, and the effect is not good. Traditional posterior discoscopy (MED) surgery is more reliable than simple ablation, but because the surgical access and treatment process are consistent with small incision open surgery, it is necessary to implement the opening of the vertebral plate, stripping the muscles and ligaments, interfering with the spinal canal, and pulling the nerves; this is easy to cause intra-operative bleeding, interfering with the field of view and increasing the risk of complications; it can’t be applied to the treatment of extreme lateral herniation, nerve root canal stenosis, and intervertebral discogenic pain (narrow indications); the operation can’t be used for the treatment of extremely lateral herniation, nerve root canal stenosis, and discogenic pain. (narrow indications); postoperative scar tissue easily causes adhesion of the spinal canal and nerves, and the treatment effect is not satisfactory. This is also the reason why doctors and patients have difficulty in accepting and trusting minimally invasive techniques, which has prevented them from being widely used for many years. So how to completely solve the above problems and meet the patient’s medical requirements? The emergence of the new intervertebral foraminoscopy technology makes the treatment of intervertebral disc herniation enter into a substantial minimally invasive era. 2002, after thousands of cases of TESSYS intervertebral foraminoscopy technology, Prof. Hoogland of Germany (the former president of European Minimally Invasive Technology) put forward the revolutionary improvement and upgrading technology on the basis of the YESS technology – THESSYS technology. The THESSYS technique utilizes natural channels and uses special reaming drills and instruments to expand the intervertebral foramina step by step, and can directly and accurately remove the herniated disc tissues under the monitoring of the TV screen. The adjustable multi-angle bipolar radiofrequency electrodes can directly ablate the nucleus pulposus, repair the ruptured annulus fibrosus and completely relieve the liquid nucleus pulposus from overflowing without generating any heat, and ozone injections can be made through the special channel, instantly relieving nerve roots from edema and bacterial inflammation. edema and aseptic inflammation, and effectively prevents postoperative disc infection; thus completely solving the clinical symptoms and meeting the needs of patients, pushing the minimally invasive treatment technology for spinal diseases to an unprecedented peak. It makes the intervertebral foraminoscopy technology mature. Minimally invasive is a concept, a philosophical idea, as well as a practical clinical application technology. It is inextricably linked to the development of imaging, electronics, optics, biomaterials and new instruments. The rapid evolution of recent years is changing the philosophy and approach to spine surgery more and more radically. Both the early percutaneous puncture interventions, as well as the gradual development of percutaneous fixation, and the subsequent microendoscopic techniques, have all demonstrated the importance, and sometimes the decisive factor, of new materials and instruments in minimally invasive surgery. Intervertebral foramenoscopy spine minimally invasive technology is an international leading high-tech, is an important direction for the future development of spine minimally invasive surgery. This technology can treat herniated disc in the most minimally invasive way, avoiding the traditional surgery of stripping the paraspinal muscles, biting off the vertebral plates and ligaments, and destroying the stability of the spine, and will not interfere with the vertebral canal, do not have to pull the nerve roots, do not merge the spine, preserving the spine’s motion segments, safe and reliable, and more in line with the physiological requirements of spinal motion, which can clearly show the protruding intervertebral disc tissues and the oppressed dural sac and nerves, and remove the compression under the direct vision. During the operation, the protruding disc tissue and the compressed dural sac and nerves can be clearly shown, and the tissues compressing the nerves can be removed under direct vision.