Intervertebral foraminoscopy is a surgical procedure in which the patient enters the foramen from the lateral or posterior side of the patient’s body and removes the herniated or prolapsed nucleus pulposus and hyperplastic bone to relieve pressure on the nerve roots, relieve the obstruction of circulation in the lateral saphenous fossa caused by herniated disc compression, and reduce nerve root edema and aseptic inflammation by completely removing the herniated or prolapsed nucleus pulposus and hyperplastic bone outside of the foramen’s safety triangle and disc fibrous annulus. The procedure is accomplished through a specially designed intervertebral foramoscope and the corresponding supporting minimally invasive spinal surgical instruments, imaging and image processing system, and radiofrequency ablation instrument, and is a direct-view micro-opening procedure. Since the endoscope distinguishes various anatomical structures under direct vision, clearly probes and precisely treats various lesions in the spinal canal, greatly reducing the risk of damaging the dural sac and nerve roots, coupled with little interference with the biomechanical stability of the spine, rapid postoperative recovery and precise surgical efficacy, it provides a newer, more effective and less invasive advanced surgical method for patients with lumbar disc herniation. The advantages of intervertebral foraminoscopy technology are: 1. wide indications, capable of handling almost all types of disc herniation cases; 2. surgical results consistent with the gold standard of disc surgery – microscopic discectomy; 3. less trauma, no need to destroy the paravertebral muscles and ligaments, no need to bite off the vertebral plate, no impact on spinal stability; 4. multi-angle bipolar radiofrequency electrodes directly ablate the nucleus pulposus, repair the ruptured 5, can clearly observe the spinal canal and nerves, but will not interfere with them, so there will be no scar formation at the posterior important structures, and will not affect the remedial surgery after failure; 6, the surgical incision is only 0.7-1.5cm, in line with the aesthetic point of view; 7, high safety, the surgery is completed under local anesthesia, can interact with the patient, do not hurt the nerves and blood vessels, intraoperative bleeding is minimal, clear vision, greatly reducing the risk of The risk of misoperation is greatly reduced; 8, the postoperative bed time is short, recovery is fast, and the patient can be discharged in 3 days. 9, postoperative care is simple, only oral antibiotics can be taken, short recovery time; 10, low cost, no built-in materials, reduce the patient’s economic burden and health insurance burden. Second, the indications for percutaneous intervertebral foraminoscopy technique are mainly applicable to inclusive disc herniation, that is, the outer layer of the fibrous ring is still intact and unbroken. This procedure can also be used in cases where the nucleus pulposus has ruptured and protruded under the posterior longitudinal ligament, but is still located at the level of the intervertebral space without displacement, and the extent of which does not exceed 1/3 of the sagittal diameter of the spinal canal. The indications include: 1.Severe symptoms of lumbar disc herniation, leg pain more than lumbar pain, invalidated by strict conservative treatment or acute neurological dysfunction. 2.Conservative treatment is effective, but the symptoms recur quickly and affect work and life. 3.Persons with nerve root paralysis damage. 4.Central type disc herniation combined with cauda equina damage. 5.Disc herniation combined with lateral saphenous fossa stenosis. 6. Disc herniation with calcification of the herniated material. Although there are many advantages, the foraminal technique is not a panacea. Its contraindications include: 1, non-disc causes of nerve compression. 2.Persons with segmental instability such as lumbar spine slippage and dislocation. 3, cases with spinal deformities and tumors. 4.Patients with coagulation dysfunction and bleeding tendency. 5.Patients with combined psychiatric diseases. In conclusion, percutaneous intervertebral foraminoscopy, as a new minimally invasive technique for the spine, has the advantages of less trauma, less bleeding, precise efficacy and fewer complications. With the increasing acceptance of minimally invasive spine surgery by doctors and patients, this technique will definitely gain great development for the benefit of patients with lumbar spine diseases.