The invention discloses a combined office supply rack, which comprises a top plate, wherein supporting frames are fixedly connected to two sides of the bottom of the top plate; connecting rods are fixedly connected to the bottoms of the sides, which are opposite, of the two supporting frames; limiting rods are fixedly connected to two sides of the back surface of the top plate; the back surfaces of the connecting rods are fixedly connected to the limiting rods; and supporting transverse rods are movably connected to the sides, which are opposite, of the two supporting frames. According to thecombined office supply rack provided by the invention, by arranging a push rod, a movable plate, a first movable rod, a fixed block, a clamping block, a fixed piece, through holes, a clamping groove,a second movable rod, a spring pipe, a spring, a sliding plate, a connecting block, roller racks and rollers which are cooperated in use, a problem of existing combined office supply racks which are inconvenient to mount can be solved; the combined office supply rack, convenient to use, has the advantage of being convenient to mount; the combined office supply rack is convenient for users; the practicability of the combined office supply rack is improved; and the combined office supply rack is worthy of popularizing.