To reduce the entanglement of an optical fiber to a hand piece even in the case of repeatedly using a laser treating device by providing a vertical part and a horizontal part bending from the upper end, fitting a hand piece holder to the vertical part and forming a catching part at the tip of the horizontal part.

The hand piece bracket 4 is formed in the form of a reverse L by providing the vertical part 7 and the horizontal part 8 bending from the upper end thereof. The spiral catching part 6 is formed at the tip of the part 8. In addition, a mounting part 9 to a laser treating device main body 1 is provided at the lower end part of the bracket 4. Then, in order to fix the part 8 to an optional direction, the lower end of the part 7 is combined with the main body 1 to be capable of fixing at an optional rotating position. Consequently, since the looped optical fiber 2 and the hand piece 3 are positioned away from each other, the entanglement of the optical fiber 2 to the hand piece 3 can be reduced.