In　this　study,　two　lab-scale　reactors　were　set　up　and　operated　in　this　study,　include　a　sequencing　batch　reactor　for　batch　tests　and　a　continuous　predenitrification　bioreactor　for　regular　operation.　Batch　tests　fed　by　Synthetic　wastewater　(acetate)　and　operated　in　intermittent　aeration　profile,　demonstrate　that　the　alternating　anoxic/aerobic　condition　can　inhibit　NOB　and　induce　nitrite　accumulation　from　vary　first　time,　though　the　sludge　is　collected　from　a　complete　nitrification-denitrification　process.　Intermittent　aeration　profile　applied　on　a　continuous　predenitrification　reactor　treating　low-strengthen　municipal　wastewater　and　realized　partial　shortcut　nitrification-denitrification　without　changing　any　other　operation　parameters,　which　increased　TN　removal　rate　from　average　60%　to　70%　without　add　extra　carbon　resources.