Abstract: A vehicle antenna device includes a plurality of antennas in an accommodating space surrounded by a case and an antenna base, and has a height of 70 mm or less from an outer surface of a vehicle when attached to the outer surface of a vehicle. The vehicle antenna device includes a first substrate on which a first patch antenna is mounted, and a second substrate on which a second patch antenna is mounted. The first substrate is provided at a position higher than the second substrate.