Around　the　energy　flow　calculation　problem　of　integrated　energy　system,　various　energy　flow　calculation　methods　are　reviewed　from　two　aspects:　network　model　and　solution,　uncertain　performance　flow　analysis　method.　Firstly,　in　the　aspect　of　network　characteristics　modeling　of　integrated　energy　system,　partial　differential　equation　model,　dynamic　model　and　steady　state　model　and　their　solutions　are　discussed.　Secondly,　two　types　of　energy　flow　analysis　methods　for　dealing　with　external　uncertainty,　namely　probability　and　interval,　were　summarized,　and　energy　flow　analysis　methods　with　mixed　uncertainty　in　probability　interval.　Finally,　we　analyze　the　difficulties　and　hotspots　of　energy　flow　calculation　from　the　perspective　of　engineering　applications,　and　then　provide　prospects　for　its　development　direction.　©　2024　Science　Press.　All　rights　reserved.