To provide an attachment device for a head-worn hair clipper which allows an attachment of the hair clipper in a stable manner and allows any user to have an easy, clean-cut hair style.

Supporting bases 1, 43 are assembled flexibly with a screw 52. The distance between extending parts 44, 47 at the ends of the supporting bases is adjusted by an adjusting screw 45. A chin support 24 is mounted on the other end of the supporting base 1, and a support 2 is adjustably connected to the other end of the other supporting base 43 by an adjusting screw 42. A cap 22 with comb teeth is mounted on the end of the support 2 by a shank 3, and an attachment device for the hair clipper is provided on the other end of the shank 3. The attachment device is placed on a predetermined table 10 with a tripod-shaped support 50, and the head is stabilized by the chin support 24 and a cap 22 with comb teeth.