In　the　power　dispatching　data　network,　the　nodes　are　systematically　evaluated　in　advance,　so　as　to　protect　the　key　nodes,　which　is　of　great　significance　to　maintain　the　safe　and　stable　operation　of　the　whole　power　system.　From　the　perspective　of　network　edge　weight,　this　paper　proposes　an　accurate　node　influence　evaluation　method　by　analyzing　the　influence　of　edges　in　the　network.　Firstly,　the　local　importance,　global　importance　and　business　importance　of　different　edges　in　the　network　are　calculated,　and　then　the　comprehensive　edge　importance　is　obtained　by　calculating　the　index　information　entropy　values.　Finally,　the　importance　of　the　edge　is　assigned　to　adjacent　nodes,　so　as　to　obtain　the　actual　influence　of　each　node.　Through　simulation　experiments,　the　effectiveness　of　the　algorithm　for　identifying　key　nodes　in　the　network　efficiency　is　verified.　©　2023　Journal　of　Computer　Engineering　and　Applications　Beijing　Co.,　Ltd.;　Science　Press.　All　rights　reserved.