Energy　Internet　involves　multi-energy　transactions　and　multiple　market　entities,　and　it　is　one　of　the　most　urgent　problems　to　establish　a　reasonable　profit　model　for　multiple　market　entities.　This　paper　mainly　focuses　on　urban　or　regional　Energy　Internet,　in　which　the　trading　scenario　includes　the　following　three　entities:　power　grid　companies,　thermal　power　plants　and　large　users.　As　the　coupling　component　of　electric　and　thermal　energy,　thermal　power　plants　adopt　the　typical　operation　mode　of　＇fixing　heat　based　on　power＇　to　supply　energy　and　offer　price.　The　power　grid　companies　quote　in　the　form　of　service　fees　through　the　network　usage.　The　large　users　choose　to　trade　thermal　and　electric　energy　with　thermal　power　plants　or　power　grid　companies　according　to　the　above　two　quotations.　In　the　trading　mechanism,　a　three-entity　non-cooperative　game　profit　model　considering　thermoelectric　coupling　is　established.　The　existence　of　the　Nash　equilibrium　of　the　game　model　is　proved,　and　the　corresponding　solution　method　is　proposed.　Based　on　the　analysis　of　case　studies,　the　physical　meaning　of　Nash　equilibrium　is　explained　and　the　influence　of　the　income　parameters　of　each　entity　on　the　Nash　equilibrium　distribution　of　game　theory　is　analyzed.　©　2019　Automation　of　Electric　Power　Systems　Press.