To improve the degree of freedom of one hand at driving.

A housing 31 of an accelerator controller 1 is fixed to a steering wheel 2 by a fixing fitting 34. A rotor 42 is turnably provided on the housing 31 and an angle of a grip 45 provided on the rotor 42 can be changed freely against the rotational direction of the steering wheel 2. An accelerator lever 52 of the grip 45 is pressed by a finger to allow to go back. A rotation transmission bar 63 of a potentiometer 61 within a hold portion 51 is operated and inclined. An electric signal corresponding to a control input of the accelerator lever 52 is transmitted to the outside of the housing 31 through an electric cable 65 of the potentiometer 61, as slip ring 71 on the circumferential surface of the rotor 42, an electrode at the end of a spring 81 and an electric cable 91.