A protective wing type angle steel plate (2) and a skeleton fixing system, the protective wing type angle steel plate (2) comprising an attaching protective wing part (20) and a body fixing part (21)； the attaching protective wing part (20) and the body fixing part (21) are fixedly connected to each other； the attaching protective wing part (20) is used for supporting and protecting a fracture broken end and is provided with a structure matched to an inner side face of a bone diaphysis (1), and the body fixing part (21) is used for fixing the attaching protective wing part (20) and is provided with a structure matched to a front side face of a bone diaphysis (1)； at least two first locking holes (2203, 2304) used for penetrating through first locking screws (2303, 2204) are provided in the junction of the body fixing part (21) and the attaching protective wing part (20), and at least two second locking holes (2201, 2202) used for penetrating through second locking screws (2301, 2302, 2307, 2308) are provided on the structure matched with the front side face of the bone diaphysis (1). The protective wing type angle steel plate (2), the attaching protective wing part (20) and the body fixing part (21) are connected to each other and matched to each other so as to fix, support and protect a fracture broken end of a bone diaphysis (1), thereby effectively guaranteeing assistance in the stable restoration and healing of a fracture site.Font l'objet de cette invention une plaque d'angle pour protection (2) de type ailette et un système de fixation osseuse associé, laquelle plaque d'angle pour protection (2) de type ailette comprend une partie adhésive de protection (20) d'ailette et une partie de fixation (21) au corps, les deux parties précitées étant mutuellement connectées, la partie adhésive de protection (20) d'ailette étant destinée à renforcer et protéger l'emplacement d'une fracture et présentant une structure en correspondance avec la surface latérale interne d'u
