A vehicular lamp fitting according to the present invention comprises: a light guiding body; a first light source; and a second light source, wherein the light guiding body includes a first rod-shaped light guiding portion which guides first light emitted by the first light source, a second rod-shaped light guiding portion which guides second light emitted by the second light source, an intermediate portion which is arranged between the first rod-shaped light guiding portion and the second rod-shaped light guiding portion, a first coupling portion which couples a base end portion side of the first rod-shaped light guiding portion and the intermediate portion together such that a part of the first light, which enters the first rod-shaped light guiding portion through a light entering surface of the first rod-shaped light guiding portion, enters an inside of the intermediate portion.