The present invention relates to a spine fixing apparatus that is used to fix a spine and, more specifically, to a spine fixing apparatus comprising: a plate fixed to a spine； screws that are coupled to the plate and inserted into the spine； a rotation member that performs a rotary motion at a predetermined point between the screws； and sliding members that are located on opposite sides of the rotation member so as to be between the rotation member and the screws and perform a rectilinear motion. The rotation member pushes the sliding members while rotating so that the sliding members perform a rectilinear motion to cover the upper surfaces of the screws, thereby facilitating unlocking and locking of the screws through switching between an unlock mode and a lock mode, and firmly fixing the plate to a spine. Further, the plate includes a window that is formed through the plate and has a predetermined area so that an operator can identify a site of surgery with his/her naked eyes, thereby facilitating the surgery, and the plate can be easily bent so that an operator can bend the plate into a suitable shape for a patient's spine and can closely fix the plate to the spine.La présente invention concerne un appareil de fixation de colonne vertébrale qui est utilisé pour fixer une colonne vertébrale et, plus particulièrement, un appareil de fixation de colonne vertébrale comprenant : une plaque fixée à une colonne vertébrale ； des vis qui sont couplées à la plaque et insérées dans la colonne vertébrale ； un élément de rotation qui effectue un mouvement rotatif au niveau d'un point prédéfini entre les vis ； et des éléments coulissants qui sont situés sur des côtés en regard de l'élément de rotation de manière à se trouver entre l'élément de rotation et les vis et à effectuer un mouvement rectiligne. L'élément de rotation pousse les éléments coulissants tout en tournant de sorte que les éléments coulissants effectuent un mouvement rectiligne pour couvrir les surfaces supérie
