To provide a vehicular headlight capable of preventing a light distribution pattern from being vertically deflected.

This vehicular headlight 1 is structured such that a predetermined light distribution pattern is formed by a housing 2, a translucent cover 3 supported to an opening 2a of the housing 2, a support member 6 supported to the housing 2 and having at least two support parts 4 and 5 in upper and lower tiers, and lamp units 8 using, as light sources, semiconductor light emitting elements supported to the respective support parts 4 and 5 of the support member 6. At free ends 4a and 5a of the support parts 4 and 5, an adjustment means 10 capable of adjusting angles of free ends 4a and 5a is arranged.