Abstract: An image display device includes: a controller that: acquires biological information of a subject measured by a sensor at a preset time interval; displays an image shot by a shooting device on a display; specifies a position of a figure image in the shot image; and detects a specified subject in a predetermined state. While detecting the specified subject, the controller acquires the biological information of the specified subject at a second time interval shorter than a first time interval which is the time interval in normal times. At the time of displaying the shot image including the figure image of the specified subject on the display, the controller displays information corresponding to the biological information of the specified subject acquired at the second time interval in a region corresponding to the specified position of the figure image of the specified subject while making the information overlap the figure image.