This　thesis　focuses　on　a　lot　of　problem　generated　sludge　in　the　process　of　activated　sludge　wastewater　treatment.　Examine　sludge　reduction　effect　under　sludge　viscous　inflation　state　in　the　A/O　process.　The　sludge　SVI　value　in　this　experiment　is　150-290(ml/g),　between　maintain　stable　operation　with　the　reaction,　the　value　has　a　trend　to　decrease　slowly.　Water　in　the　system　and　the　stable　operation　of　the　state　standards　and　zero　to　do　blank　dosage　comparison　earthworm　flutter,　flutter　by　adding　different　earthworm　weight　(unit　weight　of　sludge　(MLSS)　in　the　flutter　earthworm　wet　weight,　that　is,　g　wet　weight　than　the　flutter　earthworm　/　MLSS　),　that　have　a　certain　effect　of　sludge　reduction.　©　2011　IEEE.