The　simultaneous　nitrogen　and　phosphorus　removal　(SNPR)　from　real　domestic　wastewater　using　aerobic　granular　sludge　(AGS)　has　been　investigated.　The　effect　of　temperature　changes　on　the　SNPR　of　AGS　was　also　studied.　Two　lab-scale　sequencing　batch　reactors　(SBRs),　named　as　A　and　B,　were　operated　for　254　days　in　alternating　anaerobic-aerobic　mode.　The　AGS　was　cultivated　in　20　days　using　settling　time　as　selection　pressure.　From　the　42nd　day　onwards,　additional　carbon　(acetate　and　peptone　for　A,　glucose　for　B)　were　added　to　make　the　ratio　of　COD:N:P　as　360:60:6.　The　SNPR　by　AGS　was　achieved　for　4　months,　and　the　removal　ratios　of　ammonia,　total　inorganic　nitrogen　and　phosphorus　of　A　were　reached　to　98.42%,　74.25%　and　94.79%,　respectively;　the　removal　ratios　of　ammonia,　total　inorganic　nitrogen　and　phosphorus　of　B　were　reached　to　99.45%,　75.96%　and　95.60%,　respectively.　Then,　the　temperature　decreased　to　9-13°C,　which　seriously　affected　the　efficiency　of　SNPR.　The　removal　efficiencies　of　SNPR　of　reactor　A　and　B　were　recovered　after　35　days　and　49　days,　respectively,　and　the　removal　ratios　of　ammonia,　total　inorganic　nitrogen　and　phosphorus　of　A　were　reached　to　96.33%,　79.49%　and　99.68%,　respectively;　the　removal　ratios　of　ammonia,　total　inorganic　nitrogen　and　phosphorus　of　B　were　reached　to　93.85%,　76.44%　and　98.44%,　respectively.　PAOs　and　DNPAOs　together　completed　the　phosphorus　removal　and　made　phosphorus　removal　faster　than　nitrogen　removal.　Nitrification　was　the　rate　limiting　step　for　SNPR.　The　low　temperature　made　the　anoxic　zone　in　AGS　decrease,　together　with　the　absence　of　PHAs,　made　denitrification　could　not　complete.