The invention discloses a connection-type desk-chair for sitting posture correction. The desk-chair comprises a desk and a chair, a chair back is fixedly installed on the chair, and a chair rotation shaft is fixedly installed on the chair; a chair seat is movably sleeved with the chair rotating shaft, a rack is fixedly installed at the bottom of a limit rack, and a lifting groove wheel further fixedly sleeves a shaft of a gear; the other end of a lifting rope is fixedly connected with a lifting rack, a raising rod movably sleeves a connection rod, and the side, away from the connection rod, ofthe raising rod is fixedly connected with an inclined plate; the inclined plate is movably installed in a rotation shaft groove through a rotation shaft. According to the connection-type desk-chair,through a desk-chair combination, when a student sits on the desk-chair, all parts are automatically opened, and when the desk-chair is not used, all the parts are automatically closed; the automationdegree is high, and the desk-chair is convenient to use; the use enthusiasm of the student is easily motivated, the space is effectively saved, the sitting posture of the student is effectively corrected, a good learning habit is created for the student, the vision of the student is effectively protected, and the desk-chair is suitable for popularization.