VEHICLE SEAT, METHOD FOR MOUNTING AUXILIARY SEAT, AND STRUCTURE FOR MOUNTING AUXILIARY SEAT

A vehicle seat includes a seat, face part, a back face part, and a fixing member for fixing an auxiliary seat, which is disposed between the seat face part and the back face part. The seat face part includes a seat face recess capable of housing a lower face side of a seat part of an auxiliary seat, and a seat face cushion that is detachably attached to the seat face recess. The back face part includes a back face recess capable of housing a rear face side of a back part of the auxiliary seat, and a back face cushion that is detachably attached to the back face recess.