Intervertebral foramoscopy technique, which is minimally invasive surgery, is different from intervertebral discoscopy. The foramoscope enters from the side and opens a 7.5mm hole on the side, like a keyhole, through which the removal of the disc nucleus pulposus and decompression are completed, with little damage to the structure and stability of the vertebral body. The surgical field of view is adequate, and through the cone interforaminal technique, the disc is removed from the intervertebral disc compressed spinal cord and nerve roots, which can achieve better decompression effect, small postoperative incision, fast recovery, small destruction of stable structure, and early recovery of vertebral body function.