Hysteresis characteristics are provided to the pedal force, and the active control mechanism that pushes back the accelerator pedal for danger avoidance or danger warning is simplified while improving the responsiveness thereof. In order to achieve the above, the accelerator pedal device of the present invention includes a housing for rotatably supporting the pedal arm around a prescribed pivot axis line between a rest position and a maximum applied position, a hysteresis generation mechanism that comes in contact with the vicinity of an upper end of the pedal arm to generate hysteresis in a pedal force of the accelerator pedal, and an active control mechanism for pushing back the pedal arm toward the rest position under prescribed conditions between the pivot axis line and the hysteresis generation mechanism. The active control mechanism includes a drive source provided in the housing, and a return lever that is rotated in the same direction as the direction of the swinging of the pedal arm in conjunction with the drive source and is detachably engaged with the vicinity of the upper end of the pedal arm. According to this configuration, it is possible to provide hysteresis characteristics to the pedal force, simplify and miniaturize the active control mechanism, and thereby improve the responsiveness of active control.