A route guidance device, comprising: a vehicle information acquisition unit that is adapted to acquire a departure point (61; 91) and a destination (62; 92) for a vehicle that is provided with a drive motor and an engine as drive sources; a driving force acquisition unit that is adapted to acquire a highest value of a driving force for driving the vehicle on each road link stored in a database; an amount of remaining battery energy acquisition unit that is adapted to acquire an amount of remaining energy in a battery that supplies electric power to the drive motor; a motor drive recommended road link specification unit that is adapted to specify, as a motor drive recommended road link for which driving with the drive motor as the drive source is recommended, a road link for which the highest value of the driving force of the vehicle that is acquired by the driving force acquisition unit is not greater than a specified threshold value (P 0) above which the engine of the vehicle is operated; a route specification unit that includes an amount of required energy acquisition unit being adapted to acquire an amount of energy required for driving the vehicle on each road link, the route specification unit being adapted to specify a route that is configured only from the motor drive recommended road link and on which the amount of remaining battery energy does not decrease to a value equal to or less than a specified value based on the amount of remaining battery energy at the departure point (61; 91) that is acquired by the amount of remaining battery energy acquisition unit at the departure point (61; 91) and on the amount of energy that is required for each road link that is acquired by the amount of required energy acquisition unit such that the vehicle can drive from the departure point to the destination using only the drive motor as the drive source and a route guidance unit that is adapted to provide guidance for the route that is specified by the route specification unit. a vehicle information acquisition unit that is adapted to acquire a departure point (61; 91) and a destination (62; 92) for a vehicle that is provided with a drive motor and an engine as drive sources; a driving force acquisition unit that is adapted to acquire a highest value of a driving force for driving the vehicle on each road link stored in a database; an amount of remaining battery energy acquisition unit that is adapted to acquire an amount of remaining energy in a battery that supplies electric power to the drive motor; a motor drive recommended road link specification unit that is adapted to specify, as a motor drive recommended road link for which driving with the drive motor as the drive source is recommended, a road link for which the highest value of the driving force of the vehicle that is acquired by the driving force acquisition unit is not greater than a specified threshold value (P 0) above which the engine of the vehicle is operated; a route specification unit that includes an amount of required energy acquisition unit being adapted to acquire an amount of energy required for driving the vehicle on each road link, the route specification unit being adapted to specify a route that is configured only from the motor drive recommended road link and on which the amount of remaining battery energy does not decrease to a value equal to or less than a specified value based on the amount of remaining battery energy at the departure point (61; 91) that is acquired by the amount of remaining battery energy acquisition unit at the departure point (61; 91) and on the amount of energy that is required for each road link that is acquired by the amount of required energy acquisition unit such that the vehicle can drive from the departure point to the destination using only the drive motor as the drive source and a route guidance unit that is adapted to provide guidance for the route that is specified by the route specification unit.