The invention discloses an office chair with a storage box. The office chair structurally comprises an office chair backrest, a storage box, an office chair handrail, a backrest connecting rod, a telescopic air cylinder, universal movable wheels, a supporting leg and a cushion; the storage box is composed of a seal cover handle, a seal cover, a storage box main body, fixed sheets and fixed bolt mounting holes; the seal cover handle is mounted on the upper surface of the seal cover through bolts; the seal cover is placed above the storage box main body; the fixed sheets are welded to the left and right sides of the storage main body; the fixed bolt mounting holes are connected through the surfaces of the fixed sheets; and the storage box main body is fixed to the back of the office chair backrest through bolts. According to the office chair with the storage box, the office chair with the storage box is relatively large in using space, and private articles can be placed in the storage box, so that the office chair with the storage box is simple and convenient to operate and the practicality is improved.