Vehicular headlamp system

Each of a pair of left and right lamp chambers (3) disposed at a front of a body of a vehicle (2) is constituted with an enclosing housing (4) and a transparent front cover (5) fixed to the housing (4), and accommodates therein a high-beam forming front lamp unit as a reflecting lamp (7) disposed in a front half region of the lamp chamber (3) and a low-beam forming rear lamp unit as a projecting lamp (6) disposed in a rear half region of the lamp chamber (3), the front and rear lamp units (6, 7) overlapping each other in a longitudinal direction of the vehicle (2).