Headlight mounting mechanism

A headlight (10) is provided with a bulb (110), a base member (112) and a lens (114). An optical axis adjusting part (126) adjusting an optical axis of irradiating light transmitted in the lens (114) is provided to the base member (112) by changing a mounting angle at which the lens (114) and the base member (112) are attached to a vehicle body and a pivot (140) which functions as a base point of the mounting angle when the optical axis is adjusted is provided to the lens (114). Hereby, a load applied to the lens (114) and the base member (112) can be dispersed. The aim of the present invention is to enhance the durability of a headlight.