The present invention discloses a reactive distillation apparatus for multistage counter-current rotating bed and its application, the apparatus comprises a closed shell, in the center of which a revolving shaft linking each shell section is set, the said shaft is provided with two or more rotors in series connection, a feeding inlet, a reflux inlet and an outlet of the gas phase are mounted on the top end face of the shell while a waste liquid outlet and an inlet of the gas phase are set on the bottom end face of the shell, the said shell consists of an upper section of the shell and a lower section of the shell along the axial direction, the said rotor consists of a rotating disc firmly connecting with the revolving shaft and a static disc mounted to the shell, a group of concentric dynamic filler rings but with different diameters are installed at intervals along the radial direction, wherein the wall of the dynamic filler rings is holed, and the ring clearance between the dynamic filler rings is configured with static rings fastened on the static disc; the filler filled in the said dynamic filler ring includes a catalytic filler and a wire gauze filler with the catalyst filler filled in the dynamic filler ring of the outer circle of the upper rotor and the inner circle of the lower rotor and the wire gauze filler filled in the rest of the dynamic filler rings, to make the whole rotor structure equivalent to the distillation section, reactive distillation section and stripping section; a feeding inlet is arranged on the top cover of the shell corresponding to the spray nozzle of raw material liquid; a rotating liquid distributor is arranged on the inner side of the innermost dynamic filler ring of the said lower rotor. The catalyst of the present invention not only plays the role of catalytic reaction, but also increases the interphase mass transfer area; the present invention improves the mass transfer efficiency and the separation efficiency of the reactive distillation process.