In　order　to　realize　the　low-carbon　emission　of　power　system　and　boost　the　economic　growth,　a　bi-level　optimal　dispatching　strategy　based　on　the　demand　response　considering　nodal　carbon　intensity　is　proposed,　which　uses　the　model　of　carbon　intensity　guided　multivariate　flexible　load　as　basic.　First,　by　using　the　principle　of　proportional　sharing　to　track　the　carbon　emission　flow,　a　carbon　emission　flow　model　is　built,　and　the　carbon　intensity　variation　law　of　each　node　is　perceived　from　a　spatiotemporal　dimension.　Then,　the　carbon　flow　analysis　is　incorporated　into　the　load-side　demand　response　mechanism,　the　nodal　carbon　intensity　is　used　to　establish　the　carbon　emission　model　of　demand　response　for　load　aggregators,　and　the　dispatching　differences　of　load　aggregators　under　different　carbon　intensities　are　clarified　to　build　a　bi-level　optimal　dispatching　model　of　power　system　based　on　demand　response　considering　nodal　carbon　intensity.　The　upper-level　of　the　model　is　the　optimal　economic　dispatching　of　power　grid　operators,　and　the　lower-level　of　the　model　is　the　demand　response　economic　dispatching　of　load　aggregators.　Finally,　the　effectiveness　of　the　proposed　method　is　verified　by　a　modified　IEEE　30-bus　system.　©　2024　Automation　of　Electric　Power　Systems　Press.　All　rights　reserved.