A vehicle decorative component to be installed in a vehicle, the vehicle decorative component comprising: a decorative unit comprising a light emitting region emitting light and a non-light emitting region adjacent to the light emitting region, an irradiation body that irradiates the light toward a front side of the light emitting region, the decorative unit further comprising a transmissive body through which the light emitted from the irradiation body is transmitted at a front position of the irradiation body; and a decorative layer formed at a front position of the transmissive body in a state where a surface is exposed, wherein a decoration style of the exposed surface of the decorative layer in the light emitting region is a same style as a decoration style of a surface of the non-light emitting region; wherein the irradiation body includes a light source, and a light guiding body including a light emission surface that emits the light from the light source; characterized in that the light source and the light guiding body are integrated as a light source unit; the light source unit is assembled on the side of a back surface of the decorative unit in such a manner that a gap (d) between the light guiding body and the transmissive body becomes a predetermined distance; the decorative unit includes a positioning portion to be abutted with the light source unit at time of assembling the light source unit to the decorative unit, so as to place the light source unit at such a position that the gap (d) becomes the predetermined distance; the positioning portion is a rib extending from the back surface of the decorative unit; the rib is provided so as to surround the light source unit when the light source unit is assembled to the decorative unit; the decorative unit further includes a fixing portion that fixes the light source unit; the light source unit includes an engaged portion with which the fixing portion is engageable, and is assembled to the decorative unit by engaging the fixing portion with the engaged portion; the fixing portion comprises claw portions extending toward the outer side from an outer edge of the rib; the engaged portion comprises engagement holes formed by engagement hole forming portions which have a portal outer shape; and the engagement hole forming portions are formed at two points in an upper end of the light source unit and at two points in a lower end of the light source unit, and extend upward and downward respectively. a decorative unit comprising a light emitting region emitting light and a non-light emitting region adjacent to the light emitting region, an irradiation body that irradiates the light toward a front side of the light emitting region, the decorative unit further comprising a transmissive body through which the light emitted from the irradiation body is transmitted at a front position of the irradiation body; and a decorative layer formed at a front position of the transmissive body in a state where a surface is exposed, wherein a decoration style of the exposed surface of the decorative layer in the light emitting region is a same style as a decoration style of a surface of the non-light emitting region; wherein the irradiation body includes a light source, and a light guiding body including a light emission surface that emits the light from the light source; characterized in that the light source and the light guiding body are integrated as a light source unit; the light source unit is assembled on the side of a back surface of the decorative unit in such a manner that a gap (d) between the light guiding body and the transmissive body becomes a predetermined distance; the decorative unit includes a positioning portion to be abutted with the light source unit at time of assembling the light source unit to the decorative unit, so as to place the light source unit at such a position that the gap (d) becomes the predetermined distance; the positioning portion is a rib extending from the back surface of the decorative unit; the rib is provided so as to surround the light source unit when the light source unit is assembled to the decorative unit; the decorative unit further includes a fixing portion that fixes the light source unit; the light source unit includes an engaged portion with which the fixing portion is engageable, and is assembled to the decorative unit by engaging the fixing portion with the engaged portion; the fixing portion comprises claw portions extending toward the outer side from an outer edge of the rib; the engaged portion comprises engagement holes formed by engagement hole forming portions which have a portal outer shape; and the engagement hole forming portions are formed at two points in an upper end of the light source unit and at two points in a lower end of the light source unit, and extend upward and downward respectively.