This accelerator pedal device includes a pedal arm (20) having an accelerator pedal (24), a housing (10) that supports the pedal arm so as to be capable of swinging about a prescribed axis line (S) between a rest position and a maximum push position, a slider (30) that slides over an inner wall (11d) of the housing, a contact part (25) formed on the pedal arm in order to exert pressing force whileseparably coming into contact with the slider, and an urging spring (40) disposed between the housing and the slider so that the urging force pressing the slider against the inner wall (11d) and thecontact part (25) increases in accordance with the pushing of the accelerator pedal. This makes it possible to yield the desired hysteresis in the pushing force while achieving size reduction, etc.