A pedal operation amount display apparatus includes: a display device that is configured to display an accelerator operation amount of an accelerator pedal by an operating person by means of light emission of segments; and an assist reaction force calculation part that is configured to set a threshold operation amount as a target value of the accelerator operation amount; and a display control part that is configured to control the display device in a manner such that the accelerator operation amount corresponding to the threshold operation amount is constantly displayed by means of light emission of the segments. Even when the threshold operation amount is changed, the display control part keeps the light emission of the segments unchanged until the accelerator operation amount varies.
