In　this　experiment,　to　determine　the　characteristics　of　low　carbon　and　nitrogen　water　quality　in　domestic　sewage,　a　sequencing　batch　reactor　(SBR)　was　used　to　realize　the　stable　operation　of　dephosphorization-nitrosation,　by　inoculating　the　enhanced　biological　phosphorus　removal　granular　sludge,　which　was　stored　at　low　temperature.　The　sludge　was　activated　by　control　of　the　aeration　intensity　and　sludge　age,　which　provided　water　for　the　influent　of　a　CANON　or　anaerobic　ammonia　oxidation　(ANAMMOX)　process.　In　the　experiment,　when　the　concentration　of　dissolved　oxygen　was　6.5　mg•L-1　and　the　sludge　age　was　30　days,　the　effluent　TP　was　less　than　0.5　mg•L-1,　the　concentration　of　COD　was　less　than　50　mg•L-1,　and　the　accumulation　rate　of　nitrite　nitrogen　was　above　90%.　It　was　also　found　that　the　performance　of　phosphorus　removal　can　be　improved　by　reducing　the　aeration　intensity　and　reducing　the　age　of　sludge　when　the　performance　was　damaged　by　excessive　aeration　strength.　Aging　the　sludge　for　40　days　could　restore　nitrification　during　the　process　of　phosphorus　removal　and　nitrification.　The　final　concentration　of　phosphorus　was　kept　below　0.5　mg•L-1,　and　the　removal　rate　of　COD　and　TP　was　stable　at　80%　and　95%,　respectively,　the　accumulation　rate　of　nitrite　remained　above　90%,　and　the　SVI　value　decreased　from　the　initial　63　mL•g-1　to　35　mL•g-1.　The　settling　performance　of　the　granular　sludge　was　good,　and　the　particle　size　was　kept　above　1　000　μm.　©　2019,　Science　Press.　All　right　reserved.