To facilitate hanging-in of a trim cover, to make sitting smooth by illuminating a seat surface in the case of riding-on and additionally to improve an article property based on the direction of light.

This vehicle seat is provided with a seat pad 17 supported on a seat frame 16 while having a slender hanging-in opening 22 at a prescribed position, a trim cover 18 having a slit 23 cut at a prescribed position for fixedly coupling a ring 25 to an opening edge 24 of cut for covering the seat pad 17 by aligning the slit 23 with the slender hanging-in opening 22 of the seat pad 17, a hanging-in escutcheon 19 having a plurality of clip-shaped notches 26 and 26 to be inserted from the slit 23 of the trim cover 18 into the slender hanging-in opening 22 on the seat pad 17 for hanging the trim cover 18 into the seat pad 17 by engaging these plural clip-shaped notches 26 and 26 with the seat frame 16, and a light source 20 for transmitting light through the slender hanging-in opening 22 while being interlocked with opening of a door.