Cranial drill with limiter

The utility model relates to the field of medical equipment, in particular to a cranial drill with a limiter with the view of overcoming defects in a current drill such as the difficulty of controlling ingoing depth and possibility of causing damage to brain tissue via access to a cranium. The cranial drill comprises a drill body and the limiter arranged on the drill body and is characterized in that multiple limiting bores are formed in a drill rod body; the bore diameter at the center of the limiter is made to be complementary to the diameter of the drill body; the side surface of the limiter is provided with a limiting bolt, the lower end of which is made to be complementary to the limiting bores of the drill rod body; the middle-lower end of the limiting bolt is provided with a segment of pin protrusions which is in contact with springs arranged in the limiter; and the front end of the limiter is closely adhered to an elastic layer. The cranial drill with the limiter has following beneficial effects: perforation depth is limited during perforation of craniotomy in order to buffer impulsive force of the drill body and avoid damage to brain tissue by preventing the drill body from entering the cranium such that effects of protecting patients and facilitating operation of medical staff.