To automatically switch pieces of information to be displayed as soon as predetermined conditions are met without waiting a user's operation.

An in-vehicle information display device: acquires pieces of information by executing a plurality of application programs from an external server via a communication network, respectively; selectively displays different pieces of information of the respective application programs on a plurality of display units whose number is less than the number of the application programs; associates the respective pieces of information with display priority changing according to time; and selects pieces of information with high display priority to display them on each of the display units.