The invention discloses a deep-bed multiplication MBBR reactor for rural sewage treatment. The deep-bed multiplication MBBR reactor comprises an anaerobic tank, an anoxic tank, an MBBR tank, a secondary sedimentation tank and a micro-ecology filter bed and is characterized in that the anaerobic tank is connected with a water inlet pipe, the anaerobic tank is communicated with the anoxic tank through a pipeline I, the anoxic tank is communicated with the MBBR tank through a pipeline II, the MBBR tank is communicated with the secondary sedimentation tank through a pipeline III, the secondary sedimentation tank is communicated with the micro-ecology filter bed through a secondary sedimentation tank water outlet pipe, and plants are planted on the micro-ecology filter bed; sewage enters the water inlet pipe, flows into the anaerobic tank, is sequentially treated by the anaerobic tank, the anoxic tank, the MBBR tank and the secondary sedimentation tank and then enters the micro-ecology filter bed. The deep-bed multiplication MBBR reactor has the advantages that an aerobic zone is small in floor space, and civil engineering investment is saved; under conditions that same filler is addedand pollution load is identical, the MBBR tank about accounts for 70% of the capacity of a conventional aerobic tank; meanwhile, the MBBR tank is short in starting time, low in operation energy consumption, resistant to impact load, prolonged in sludge age, free of sludge bulking and resistant to toxic compounds.