Abstract: A high-low beam switching device includes an installation housing, a high-low beam switching unit, and an actuating unit. The high-low beam switching unit includes a light occluding member movable between a low beam position and a high beam position, a retaining protrusion disposed on a downward surface of the light occluding member, and an elastic member disposed for biasing the light occluding member toward the low beam position. The actuating unit includes an actuating rod engaging the retaining protrusion and operable for driving the light occluding member to switch between the low beam position and the high beam position.