The present invention relates to the posture correction chair, doedoe auxiliary seat plate on the inner side of the seat plate is further arranged, the pelvis teuleojim of the user to study the sub-seat plate a view to work sitting in a chair by being inclined to the left or right side of the seat plate prevention and by being able to by giving anti-fatigue, and weakness of the pelvis teuleojim and configuration can be achieved which is capable of preventing the disease, such as a disk according to the user's spine teuleojim caused to advance as easily assembled by a simple configuration reduce production costs and gives greatly improved productivity and operational efficiency and to provide a posture chairs that do not add to the burden on the purchase cost of the consumer.
Designed present to achieve this, the bridge (1) and the and the seat plate (2) supported by the location in the upper leg (1) of the leg (1), or the like is ipseol user of the back side of the seat plate (2) in consisting of the backrest (3) beneath the chair, the receiving portion 10 the inner surface on the inside of the seat plate (2) formed in the respective clamping members (11, 11) on the floor on both sides are more through holes, the clamping members ( 11, through 11) of the two shaft seal both ends of the fixed and walking becomes formed with a respective inlet groove 21 at the top of the center portion 20, 20; The two shaft seal mounting portion 20 is a through when the inlet groove 21 of the 20 support and shaft seal 30, which is a review article inside the receptacle (10) and; The auxiliary seat plate 40 when the mounting groove 41 which is seated on an upper surface formed in the center of the shaft seal 30 is further provided is characterized in that formed.