To provide a headlight equipped with a variable beam particularly for a vehicle that can generate a high beam having different light distributions by the use of a single light source.

This headlight comprises a first reflector 31 having a generally recessed surface, a lamp 33 that is fixably mounted to the first reflector 31 and supports a light source, and a second reflector 32 received in the recess of the first reflector 31. The second reflector 32 rotatively moves between two positions using the axis X of the first reflector 31 as a center.