An information display terminal comprises a display controller configured to determine a range to be used by an image display device to display an image on a mirror surface and a sensor unit configured to detect an ambient condition. The display controller determines the range to be used to display an image on the mirror surface using information detected by the sensor unit. The information display terminal is a mirror display having a mirror function on a display surface as well as a function of displaying an image or information on an entire surface or a portion of the mirror surface so that it can provide information while keeping convenience as a mirror.