In a rear seat having a configuration which, in the state that a seat cushion is folded forward with a seat back flattened on the seat cushion side, makes an upward back surface of the seat back become almost the same height with a floor surface of a cargo room, to avoid giving a restriction and hurt in amenity to a passenger seated on the seat cushion in the space on which feet of are put, the present invention provides a vehicle seat to which parallel link mechanism portions are equipped that connect the seat cushion to a floor surface under the seat cushion of the vehicle, and a mechanism is provided to fold the seat cushion forward with the posture of the seat back held by the parallel link mechanisms in the state that the seat back is flattened to the seat cushion side.