The utility model relates to a compressed air source filtration purification system is carried to dairy products powder. This system includes that gas appliances is carried to the workshop powder and air feed filtration disinfection system more than a set, the every set of air feed filters that the disinfection system includes the air compressor machine system that sets gradually along the gaseous direction of delivery on, coldly does quick-witted system, adsorbs formula drying system, motorised valve no. 1, aseptic filteration ware and motorised valve no. 2, it is used for carrying out sterile steam generator to the logical steam of aseptic filteration ware to go back other having connect on the connecting tube between motorised valve no. 1 and the aseptic filteration ware, be equipped with motorised valve no. 3 between steam generator and the aseptic filteration ware, other the give vent to anger pipeline and control this steam motorised valve no. 4 that the pipeline opened and close of giving vent to anger of steam that connects on aseptic filteration ware and the motorised valve connecting tube between two. This system can not only realize automated control, practices thrift the cost of labor, improves work efficiency, is equipped with steam generator in addition, can disinfect in advance to the aseptic filteration ware for the filtration purification effect is better.