The invention discloses a conveniently loading and unloading cutting device for latex mattress processing. The device comprises side plates, a bottom plate, supporting legs, a top plate, lifting cutting cylinders, a rectangular ring cutter, a cutter holder, a mounting sleeve, a through hole, a cutting edge, front-back driving mechanisms, a shell, a servo motor, a threaded rod, a fixing seat, nuts,a rotary driving cylinder, a connecting plate, a flat plate, bearing battens, balls, infrared correlation sensors, guide inclined plates, bearing blocks, bearing plates, handles, magnets, concave holes, a rotating shaft, electric push rods, insertion blocks, slots, electric push rods and strip-type straight slots. The two flat plates can be used for containing materials. When the materials on oneflat plate are cut, the materials on the other flat plate can be loaded and unloaded manually. The cutting machining of the whole device is not affected in an operation process without halt to wait,so that the machining efficiency is improved. The infrared correlation sensors can detect whether the materials exist or not and further detect the thickness of the materials, so that cutting is controlled.