A guidance information display device includes: a voice input unit; a display unit for displaying guidance information; an operation unit for accepting an operation; and a processor capable of executing the following processes of: a voice recognition process operation of performing voice recognition based on inputted voice; a calculation operation of calculating an evaluation value for a recognition result of voice recognition by the voice recognition process operation; a display operation of reading out guidance information corresponding to the recognition result from a storage unit, which stores the guidance information, and displaying the guidance information at a display unit; and a decision operation of deciding a display mode of the guidance information at the display unit based on a variable value, which varies with an operation from the operation unit for the guidance information displayed by the display operation, and the evaluation value calculated by the calculation operation.