A circumcision apparatus comprises a fixed support (10) with a first through hole (11) and a second through hole (12) machined thereon along a same axis. A tool carrier shaft (20) passes through the first through hole (11). A first end of the tool carrier shaft (20) that is arranged outside the fixed support (10) is connected to a locking mechanism (30) for locking the tool carrier shaft (20) to the fixed support (10), and a second end of the tool carrier shaft (20) is connected to a shield (40). The shield (4) extends through the second through hole (12) to the external of the fixed support (10), and the shield (40) is coaxial with the tool carrier shaft (20) and is detachably connected thereto. A positioning sleeve (50) in clearance fit with the shield is provided at the second through hole (12), and the positioning sleeve (50) is detachably connected to the fixed support (10), and the clearance between the positioning sleeve (50) and the shield (40) is suitable for the thickness of prepuce, so that the prepuce can extend into the fixed support (10). By changing shields (40) and positioning sleeves (50) of different sizes, the circumcision apparatus is applicable to penises of different sizes, and thereby penises of different sizes can be circumcised by using a same circumcision apparatus, which is easy to operate, time-saving, and effort-saving.La présente invention concerne un appareil de circoncision comprenant un support fixe (10) dans lequel sont usinés un premier trou traversant (11) et un second trou traversant (12) le long d'un même axe. Une tige (20) porte-outil passe par le premier trou traversant (11). Une première extrémité de la tige (20) porte-outil, qui est disposée à l'extérieur du support fixe (10), est reliée à un mécanisme de verrouillage (30) permettant de verrouiller la tige (20) porte-outil sur le support fixe (10), et une seconde extrémité de la tige (20) porte-outil est reliée à un flasque (40). Le flasque (40) s'étend à travers le second t
