A touch device usable for a hair dressing apparatus is disclosed. The touch device includes a touch sensing shell, an FPC (Flexible Printed Circuit) board and a PCB (Printed Circuit Board), wherein the touch sensing shell is mounted on the surface of the hairdressing apparatus. The FPC board is attached to the touch sensing shell and mounted between the touch sensing shell and the hairdressing apparatus. The PCB is connected with the FPC circuit board by use of a lead and mounted inside the hairdressing apparatus. The touch sensing shell is capable of sensing actions provided by the fingers of a user and preventing the FPC board from having direct contact with the user, A touch sensing region and a functional control unit are arranged on the FPC board and connected with a central processing unit.