Mature　aerobic　granular　sludge　was　inoculated　at　room　temperature　in　an　anaerobic/aerobic　alternating　continuous　flow　system.　The　system　consisted　of　two　independent　anaerobic　and　aerobic　tanks.　Actual　domestic　sewage　was　used　as　the　influent　to　explore　the　influence　of　the　gas　intensity　and　hydraulic　residence　time　on　the　continuous　flow　system.　The　results　revealed　that　the　conditions　of　a　reflux　ratio　of　2,　lower　aeration　intensity　(0.6　mL·min-1),　and　proper　hydraulic　residence　time　(9　h)　were　more　conducive　to　the　removal　of　pollutants.　Under　such　conditions,　the　average　removal　rate　of　TP　was　80.43%,　the　average　removal　rate　of　TN　was　83.6%,　the　average　removal　rate　of　COD　was　90.39%,　the　sludge　concentration　was　approximately　2100　mg·L-1,　the　sludge　volume　index　was　maintained　below　50　mL·g-1,　and　the　particle　size　was　700-800　nm.　The　EEM-PARAFAC　model　was　used　to　characterize　and　analyze　the　EPS　at　different　stages.　The　results　revealed　that　changing　the　parameters　could　change　the　composition　of　EPS.　The　hydraulic　residence　time　had　a　greater　impact　on　the　continuous　flow　system　than　the　aeration　intensity.　In　addition,　a　preliminary　conceptual　reaction　process　model　in　the　anaerobic/aerobic　alternating　continuous　flow　system　was　built　using　high-throughput　pyrosequencing　and　phylogenetic　assignment.　Eleven　major　functional　bacteria　related　to　nitrogen　and　phosphorus　removal　were　found　in　the　system.