A sliding-type heel pad (15, 66) with height adjustment for a vehicle cabin, said sliding-type heel pad (15, 66) comprising: a pad main body (20, 67) having an upper surface (20a, 20b, 67a, 67b) that varies in height, when the sliding type heel pad (15, 66) is placed on a floor panel inside the vehicle cabin, from the floor panel depending on a position at which a driver (C, D) touches the pad main body (20, 67) by heel; a sliding mechanism (21, 85) for moving the pad main body (20, 67) toward or away from a pedal disposed inside the cabin; and a stopper mechanism (22, 71b, 71c, 93, 94) for restricting movement of the pad main body (20, 67) by the sliding mechanism (21, 85), the sliding-type heel pad (15, 66) with height adjustment further comprising an operation part that cancels the restriction on the movement of the pad main body (20, 67) by the sliding mechanism (21, 85), characterized in that the operation part comprises an operation lever (40, 41, 42, 71a, 71b, 71c) that is oscillatably attached to the pad main body (20, 67) and allowed to be, via a depressible operation button disposed on the pad main body, pushed down by the driver's foot, wherein the sliding mechanism (21, 85) comprises first and second panel-side rails (27, 33, 88, 90) provided on opposite ends of the pad main body (20, 67) in a width direction and being adapted to be fixed to the floor panel, wherein the stopper mechanism (22, 71b, 71c, 93, 94) comprises either plural locking pieces (30, 35) formed in the panel-side rail (27, 33) and at least one engagement hole (46, 52) arranged on the operation lever (40, 41) for engagement with one of the locking pieces (30, 35), or plural groove portions (72, 73) arranged on the operation lever (71a, 71b, 71c) and an engagement pin (93, 94) arranged on the panel-side rail (88, 90) for engagement with one of the plural groove portions (72, 73), and wherein, when the operation lever (40, 41, 42, 71a, 71b, 71c) is pushed down, the engagement hole (46, 52) or the plural groove portions (72, 73) is/are disengaged from the locking pieces (30, 35) or the engagement pin (93, 94) so as to allow sliding movement of the pad main body (20, 67). a pad main body (20, 67) having an upper surface (20a, 20b, 67a, 67b) that varies in height, when the sliding type heel pad (15, 66) is placed on a floor panel inside the vehicle cabin, from the floor panel depending on a position at which a driver (C, D) touches the pad main body (20, 67) by heel; a sliding mechanism (21, 85) for moving the pad main body (20, 67) toward or away from a pedal disposed inside the cabin; and a stopper mechanism (22, 71b, 71c, 93, 94) for restricting movement of the pad main body (20, 67) by the sliding mechanism (21, 85), the sliding-type heel pad (15, 66) with height adjustment further comprising an operation part that cancels the restriction on the movement of the pad main body (20, 67) by the sliding mechanism (21, 85), characterized in that the operation part comprises an operation lever (40, 41, 42, 71a, 71b, 71c) that is oscillatably attached to the pad main body (20, 67) and allowed to be, via a depressible operation button disposed on the pad main body, pushed down by the driver's foot, wherein the sliding mechanism (21, 85) comprises first and second panel-side rails (27, 33, 88, 90) provided on opposite ends of the pad main body (20, 67) in a width direction and being adapted to be fixed to the floor panel, wherein the stopper mechanism (22, 71b, 71c, 93, 94) comprises either plural locking pieces (30, 35) formed in the panel-side rail (27, 33) and at least one engagement hole (46, 52) arranged on the operation lever (40, 41) for engagement with one of the locking pieces (30, 35), or plural groove portions (72, 73) arranged on the operation lever (71a, 71b, 71c) and an engagement pin (93, 94) arranged on the panel-side rail (88, 90) for engagement with one of the plural groove portions (72, 73), and wherein, when the operation lever (40, 41, 42, 71a, 71b, 71c) is pushed down, the engagement hole (46, 52) or the plural groove portions (72, 73) is/are disengaged from the locking pieces (30, 35) or the engagement pin (93, 94) so as to allow sliding movement of the pad main body (20, 67).