Abstract: The present invention relates to a through-type taillight and a vehicle having same. Specifically, the through-type taillight is installed in an accommodation of a vehicle tail component, and has an outer lens, a housing and a side part, the housing being closed by the outer lens, and together with the outer lens defining an accommodating space for accommodating an optoelectronic component of the through-type taillight, wherein the side part is arranged on a side of the housing in such a way as to prevent loosening, and at least occupies a first position and a second position relative to the housing, such that in the first position the through-type taillight can be fitted into the accommodation, and in the second position the side part forms a corresponding compensating face of the vehicle tail component.