Disclosed is a tool bit for an ultrasonic osteotome comprising a head portion of the tool bit, an arbor and a bit body, with one end of the arbor being connected with the head portion of the tool bit, and the other end of the arbor being connected with the bit body wherein the head portion of the tool bit has a flat-sheet shape, and the head portion of the tool bit is bent about an axis in an axial direction of the tool bit, with an inner surface and an outer surface of the flat-sheet head portion of the tool bit having a same radius of curvature, and the head portion of the tool bit is provided with a curved part. When the tool bit for an ultrasonic osteotome is used for osteotomy, it can conveniently and quickly cut a hole in the vertebral plate or other bone tissue.
