The utility model discloses a decontamination edulcoration device for arranging tidal system interconnected system, wash and spray mechanism, outlet duct and blow off pipe including device body, air current baffle -box, the clean filter screen of impurity, impurity adsorption defogging layer, pressure, the air current baffle -box along radial direction fixed set up the lower part of device body and with device body inner chamber intercommunication, erect inside the device body of air current baffle -box top on clean filter screen of impurity and impurity adsorption defogging layer, pressure washs the pressure supply channel inside of empty can type structure in the top on clean filter screen of impurity and impurity adsorption defogging layer penetrates the device body respectively that sprays the mechanism, be arranged in the body inside the device body empty can type structure on the equipartition install a plurality of shower nozzles. This a decontamination edulcoration device for arranging tidal system interconnected system simple structure, convenient operation, can be under the prerequisite of effectively getting rid of the pipe inner wall comdenstion water effective all tiny solid impurity and volatile water soluble's chemical in the gas of the row's of cleaing away tidal system, the specially adapted is arranged the tidal system and is united.