Provided is a corrective chair using a slider means that includes a supporting leg, a seat plate that is coupled to the supporting leg and on which a user seats, and a backrest whose lower part is coupled to an upper part of the supporting leg and that supports a back of the user when the user seats on the seat plate. The chair includes a slider that is interposed between the supporting leg and the seat plate. The slider includes guide rails that are coupled to both sides of a top surface of the supporting leg, and are disposed to be inclined toward the backrest in such a manner that portions of the guide rails close to the backrest are lowered and portions thereof opposite to the backrest are raised； guide blocks whose lower parts are slidably coupled to the guide rails, that are disposed on the guide rails opposite to the backrest in an initial state, and whose upper parts are coupled to a bottom surface of the seat plate； and elastic bodies whose one sides are coupled to a bottom surface of a front side of the seat plate and the other sides are coupled to a top surface of the supporting leg. When the user seats on the seat plate, the guide blocks are slid in an inclined direction of the guide rails to compress the elastic bodies, and the seat plate is moved toward the backrest to allow a back of the user to come in contact with the backrest, and when the user rises from the seat plate, the elastic bodies are restored to original states to restore the guide blocks and the seat plate to original states. Accordingly, since the guide rails are disposed to be inclined, when the user seats on the seat plate, the seat plate is retreated toward the backrest to allow the back of the user to come in close to the backrest. Accordingly, even though the user unconsciously seats on the chair, since the corrective chair using a slider means allows back portions of an upper body such as pelvis and waist to be straightened, the corrective chair using a slider means can correct a
