A surgical cranial driller, comprising a shell assembly (10), a cranial drilling assembly (20) and a positioning assembly (30). The shell assembly (10) comprises a cranial driller shell (11), a handle (12), a bottom cover (13), a button (14), a heat dissipation plate (15) and a heat dissipator (16). The handle (12) is disposed at the bottom of the cranial driller shell (11), the handle (12) and the cranial driller shell (11) being fixedly connected； the bottom cover (13) is disposed at the bottom of the handle (12), the bottom cover (13) and the handle (12) being detachably connected； the button (14) is disposed at the left end of the handle (12), the button (14) and the handle (12) being in a key connection； the heat dissipation plate (15) is disposed at the right end of the cranial driller shell (11), and the heat dissipator (16) is disposed at the left side of the heat dissipation plate (15), the heat dissipator (16) and the cranial driller shell (11) being fixedly connected. A positioning plate (31) capable of improving drilling stability is provided on an original cranial driller, a positioning rod (34) on the positioning plate (31) is rotated by means of a wrench shaft (33) to support the drilling position, and vibration generated by a bit (21) is dispersed to the position of a pressure pad (35) by means of the positioning rod (34), thus reducing affects of the vibration on cranial drilling, improving drilling quality and facilitating subsequent treatment； a skid resistant layer is coated on the pressure pad (35) to prevent unexpected cases.L'invention concerne un foreur chirurgical crânien, comprenant un ensemble coque (10), un ensemble foreur crânien (20) et un ensemble positionnement (30). L'ensemble coque (10) comprend une coque de foreur crânienne (11), une poignée (12), un couvercle inférieur (13), un bouton (14), une plaque de dissipation thermique (15) et un dissipateur thermique (16). La poignée (12) est disposée au fond de la coque de foreur crânien
