The utility model discloses an
office chair which comprises a seat
cushion, armrests detachably arranged on two sides of the seat
cushion, a backrest detachably arranged on the back of the seat
cushion, a
waist cushion detachably arranged at the lower end of the front side of the backrest, a headrest detachably arranged at the upper end of the backrest and a bracket
assembly detachably arranged at the bottom of the seat cushion, a mounting frame used for connecting the backrest and the seat cushion is arranged on the rear side of the seat cushion, the mounting frame and the
waist cushion are detachably connected through a clamping
assembly, the clamping
assembly comprises a splicing block arranged on the back face of the
waist cushion, and a fixing block corresponding to the splicing block is arranged on the front side of the mounting frame; splicing protrusions are arranged on the edges of the two sides of the fixing block. According to the
office chair, the waist cushion is detachably arranged at the lower end of the front side of the backrest through the clamping assembly, installation is convenient and fast, efficiency is improved, the installation frame, the seat cushion, the support assembly, the headrest and the backrest are detachably connected, the packaging size of the
office chair is greatly reduced, and cavities in packaging are greatly reduced.