Lumbar intervertebral disc herniation is a common orthopedic disease, its main manifestation is the herniated intervertebral disc compression of the nerves caused by the lower extremity “discharge-like” pain (the so-called sciatica), numbness, and even strength, urinary and fecal dysfunction, in most cases can be relieved by bed rest, physical therapy, traction, waist protection, medication, etc., but some patients are ineffective conservative treatment, the quality of life is significantly affected by the need for surgical treatment. In most cases, it can be relieved by bed rest, physical therapy, traction, lumbar protection, medication and other treatments. However, in some patients, conservative treatment is ineffective and the quality of life is obviously affected, so surgery is needed. Currently, surgeries include traditional “small window” simple discectomy, discectomy interbody fusion, and minimally invasive foraminoscopic discectomy. With the continuous development of luminal technology in various clinical departments, intervertebral foraminotomy in spinal surgery came into being, which is a truly minimally invasive surgery, because traditional lumbar discectomy surgery has a certain degree of destruction of lumbar spine muscles, ligaments, and osseous structures in the posterior part of the lumbar spine, whereas intervertebral foraminotomy surgery is performed by placing the laminoscope from a small opening of less than 1cm, which results in very little surgical trauma, bleeding of 10-20 ml, and lower chance of recurrence, and the patient can go down to the ground in 2 hours after the surgery. The patient can go down to the floor in 2 hours after the surgery, and can be discharged from the hospital the next day to resume normal life. Compared with radiofrequency ablation and other “minimally invasive surgeries” with narrow indications, intervertebral foramenoscopy allows direct visualization of the protruding discs and nerve roots, and direct removal of the disc tissue that is compressing the nerve roots, and the surgery can be performed under local anesthesia, making it a safer and more effective procedure. Therefore, this procedure is suitable for almost all types of lumbar disc herniation, especially for young patients or elderly patients with many comorbidities who cannot tolerate open surgery. The working channel is placed after a gradual dilatation, and as seen microscopically, the surgical incision is closed with only 1 suture, and the herniated disc is removed as seen in the preoperative and postoperative MRI.