A door structure of a vehicle, having an effective space within a vehicle compartment increased, is provided. The door structure has a carrier plate (4) fixed to an inner panel (3) for closing an opening portion (3a) formed in the inner panel (3); and a plurality of trim members (7, 8, 9) for covering an inside of the carrier plate (4) within a vehicle compartment, the plurality of trim members (7, 8, 9) including a belt line trim (7) disposed along a belt line in an upper end portion of the inner panel (3), a pocket trim (8) disposed in the vicinity of a lower portion of the inner panel (3), and an arm rest trim (9) disposed between the belt line trim (7) and the pocket trim (8).