A front-loading laundry-washing apparatus includes: a housing including a door in a front thereof for opening and closing; a washing tub rotatably supported inside the housing and shaped like a cylinder opened toward the door to load laundry therein; and a plurality of lifters arranged at predetermined intervals along a spinning direction of the washing tub on an inner circumferential surface of the washing tub, and including end portions extended toward a spinning center of the washing tub, wherein at least one lifter of the plurality of lifters is provided to alternate between a first state having a first height from the inner circumferential surface in a first section within a spinning section of the washing tub and a second state having a second height higher than the first height from the inner circumferential surface in a second section within the spinning section of the washing tub.