I. Limitations of traditional technology Before the emergence of interventional disc therapy, open surgery is the only effective means of treating severe disc herniation, and the interventional methods include collagenase dissolution, percutaneous cutting and suction, laser vaporization (PLDD), plasma nucleus pulposus shaping, ozone, and radiofrequency ablation, etc. However, all of the above methods are indirect decompression, which can only be used for some inclusive herniated disc cases. However, the above methods are indirect decompression, only for some of the inclusive herniation cases, can not completely remove the diseased nucleus pulposus, especially the compression of the nerve tissue, can not repair the broken fibrous ring, necrotic tissues need to rely on the body’s natural absorption, long time, pain, high recurrence rate, the U.S. FDA has not been approved. The development of posterior discoscopy (MED) technology in the mid-1990s has advanced the concept of minimally invasive treatment a great step forward. However, the surgical access and treatment process of posterior discoscopy is consistent with small incision open surgery, which involves opening of the vertebral plate, stripping of muscles and ligaments, interfering with the spinal canal, and pulling on the nerves (to a lesser extent than open surgery); it is prone to intra-operative hemorrhage, interfering with the field of view and increasing the risk; it is not suitable for the treatment of extreme lateral herniation and discogenic pain; and the postoperative scar tissue is prone to cause adhesion of the spinal canal and the nerves. The emergence of “spinal endoscopic technology” has better overcome the shortcomings of the above technology and pushed the minimally invasive treatment of disc herniation to a brand-new level, which is the most minimally invasive, safest and economical technology at present; it has evolved from the initial solution of lumbar disc herniation through lumbar foramen to the percutaneous endoscopic cervical discectomy, posterior cervical foramen dissection and decompression, and transforaminal foramen dissection and decompression, to the percutaneous endoscopic cervical discectomy. From the beginning of transforaminal approach to solve lumbar disc herniation to percutaneous endoscopic cervical discectomy, posterior cervical intervertebral dissection and decompression, transforaminal lumbar interbody fusion and other surgeries, minimally invasive spine treatment has been widely used, just like laparoscopy and gastroscopy. Brief introduction of spinal endoscopy technology Simply put, it is the use of an endoscope with a diameter of about the thickness of a ballpoint pen to use the posterior lateral intervertebral foramen approach, enter the spinal canal or intervertebral disc, remove the protruding tissues under the direct vision, and the nerve root is fully decompressed; the free type, and the posterior intervertebral plate space approach can be used for some cases (that is to say we can not equate the spinal endoscopy technology to the lumbar intervertebral foraminoscopy technology), and the surgical method is similar to the MED, but the opening is smaller. MED is similar, but the opening is smaller, only 7 mm. There is absolutely no risk of paralysis. Spinal endoscopy (intervertebral foraminoscopy) Remove the huge intervertebral disc during the operation Observe the nerve root fully decompression during the operation III. Advantages of spinal endoscopy technology: 1. The minimally invasive incision is only 7mm, avoiding the interference of the traditional posterior surgery on the vertebral canal and nerves, not biting off the vertebral plate, not destroying the paravertebral muscles and ligaments, having no effect on the stability of spinal column, and not needing to implant the internal fixation such as the screw. 2, the purpose of direct surgical effect is immediate, pain relief quickly. 3, wide range of indications can deal with almost all types of herniated discs, some spinal stenosis, intervertebral foraminal stenosis calcification and other bony lesions. Avoid open surgery to leave scarring at the important structures in the back, causing adhesion of the spinal canal and nerves. 5.Safety high local anesthesia anesthesia, the operation can interact with the patient, do not hurt the nerves and blood vessels; basically no bleeding; clear vision of the operation, greatly reducing the risk of misuse; will not die and paralysis. 6.Fast recovery can go down to the ground immediately after the operation, and resume normal work and physical exercise in 3-6 weeks on average. 7.Low cost is only 1/3 of the cost of open surgery. 8.Satisfied with the appearance of only one needle, basically no surgical scars.