Residential　areas　are　important　for　the　underlying　surface　of　a　city,　and　the　sponge　construction　of　a　residential　area　is　a　key　topic　in　sponge　city　construction.　Taking　the　Zi-Jing　community　as　the　research　case,　the　SWMM　model　was　established　for　simulation,　and　the　rainwater　runoff　control,　collection,　and　utilization　were　compared　and　analyzed　before　and　after　the　implementation　of　sponge　transformation　for　the　designed　rainfall　conditions　of　once　in　3,　5,　10,　20,　and　50　years.　The　results　showed　that　the　water　depth　of　the　four　outlet　pipes　was　not　a　full　tube　at　the　first　peak　time.　The　full　duration　time　was　reduced　to　1-5　h　at　the　second　peak,　and　the　flow　reduction　rate　at　the　pipe　outlet　was　between　30%　and　100%.　The　water　storage　of　sub-catchments　A1,　A3,　and　A4　increased　significantly　and　continued　to　increase　after　the　peak　rainfall　occurred,　while　that　of　A2　decreased　significantly　after　the　transformation　after　the　transformation.　For　the　whole　residential　area,　the　surface　runoff　decreased　by　37-47%,　while　the　surface　water　storage　and　infiltration　increased　by　8-14%　and　23-39%　respectively　after　reconstruction.　The　direct　storage　volume　of　rainwater　in　the　four　sub-catchment　areas　was　filled　at　least　once　above　a　once　in　5　years　scenario.　The　main　conclusions　were　as　follows:　Sponge　transformation　in　residential　areas　with　17.46%　sunken　greenbelt　and　40.85%　permeable　pavement,　and　the　time　of　the　pipe　outlet　in　full　status　can　be　shortened　by　30-200　min　in　different　rainfall　return　periods.　With　the　increase　in　the　rainfall　return　period,　the　improvement　range　of　the　infiltration　increased　from　23.36%　to　39.54%,　the　improvement　range　of　the　storage　capacity　for　rainwater　decreased　from　14.36%　to　8.06%,　and　the　reduction　degree　of　surface　runoff　increased　from　37.73%　to　47.43%.　The　water　consumption　for　flushing　is　about　30　m(3)　per　day　for　1000　people,　and　the　rainwater　storage　volume　of　765　m(3)　in　this　study　can　meet　the　flushing　water　demand　of　5000　residents　in　the　community　for　3-5　days.