To provide a travel resistance monitoring device for a vehicle urging a driver so as to suppress a travel resistance.

The travel resistance monitoring device is equipped with a calculation means calculating a travel resistance generated in the vehicle, a storage means storing the travel resistance calculated by the calculation means every division traveling of the vehicle, a comparison means the travel resistance of this time calculated by the calculation means with the travel resistance in the past stored in the storage means under the same traveling division or the same traveling environmental condition (weather or the like) each other, and an information means informing the driver of the vehicle of the comparison result by the comparison means.