The invention belongs to improvement of surgical instruments, and particularly relates to an intervertebral disc surgery fibrous ring stitching instrument used under an endoscope in the field of the spinal minimally invasive surgery. The intervertebral disc surgery fibrous ring stitching instrument mainly comprises an outer sheath (4), a needle (5) and a suture clamping bolt core (6) which are sequentially stacked in a sleeving manner from outside to inside; a suture supplying device is arranged in the front of the outer sheath (4); a barb (8) capable of accommodating sutures are arranged in the front of the needle (5); and the front end of the suture clamping bolt core (6) can slide in the front-back direction so as to clamp or release the sutures. Furthermore, the suture supplying device is a front supporting claw (7) for preventing the sutures from slipping and specifically comprises a threading hole (9) and suture fixing grooves (10); the left and the right of the threading hole (9) are symmetric to each other; and an included angle is formed between openings of the suture fixing grooves (10) and is 90 degrees preferably. By the intervertebral disc surgery fibrous ring stitching instrument, a suture to be knotted can be knotted on the outside of the endoscope, a suture knot is pushed to a suture position, and the problem that sutures are difficult to knot in a minimally invasive surgery is solved economically, simply and conveniently.