Disclosed is an interbody fusion system with a minimally invasive access approach, comprising a pouch (1) and support material (11). The pouch (1) can fold or retract, one end of the pouch (1) is provided with an injection port (12), and the support material (11) is injected inside the pouch (1) via the injection port (12). When in a full state, the pouch (1) is an elongated structure, and a face of the pouch (1) in contact with upper and lower vertebrae is a vertebrae contact face. A retractable limiting mechanism (2) is provided on a side face of the pouch (1) in the lengthwise direction, and the width of the retractable limiting mechanism (2) is smaller than or equal to the width of the pouch (1) in a naturally full state. When the pouch (1) is implanted in an intervertebral disc and the support material (11) is injected, the cross section of the pouch (1) has an I-shape or a rectangular shape parallel to the widthwise direction and perpendicular to the vertebrae contact face. The invention solves the problem of not being able to control the contact area between a fusion device and upper and lower vertebrae, so the bone space is too small, affecting the fusion result of the upper and lower vertebrae and the invention can achieve non-graded adaptation to the height of the intervertebral gap, and the contact area of the fusion device with the upper and lower vertebrae is controllable.Linvention concerne un système de fusion intersomatique à approche daccès minimalement invasive, comprenant une poche (1) et une substance de support (11). La poche (1) peut se replier ou se rétracter, une extrémité de la poche (1) est pourvue dun orifice dinjection (12), et la substance de support (11) est injectés à lintérieur de la poche (1) via lorifice dinjection (12). Lorsquelle se trouve dans un état rempli, la poche (1) est une structure allongée, et une face de la poche (1), en contact avec les vertèbres supérieure et inférieure, est une face en contact avec les vertèbres. Un
