A chair comprises a seat, a backrest and a chair base, wherein the backrest and the chair base are connected through a first connector, that comprises a base holder rigidly connected to the chair base, a back holder secured to the backrest, a rotation holder, a first linkage bar, a second linkage bar and a third linkage bar. The chair solves the problem that a user's clothes is pulled up when the backrest of the chair is turned backward in the traditional chair.