An image forming apparatus including an operation panel has, as a configuration of the operation panel, a display portion including a function to display environmental label information of the image forming apparatus. The environmental label information includes information on a type of greenhouse effect gases (CO2) and a total emission amount of the greenhouse effect gases in a life cycle of the image forming apparatus. On the display portion, a selective display portion for displaying an environmental label as list display or thumbnail display, as well as selectively displaying detailed information of the environmental label according to the environmental label.