Regional　distributed　market　with　energy　interconnection　allows　the　members　of　the　small　decentralized　market　to　trade　flexibly　and　freely.　Therefore,　it　is　necessary　to　formulate　effective　market　mechanism　and　transaction　strategy　with　full　consideration　of　the　willingness　of　market　players　to　optimize　regional　multi-energy　market　transaction.　Firstly,　the　framework　of　regional　electric　and　thermal　energy　market　is　established.　Secondly,　by　analyzing　transaction　willingness　of　participants,　an　iterative　game　mechanism　of　Nash　equilibrium　with　information　center　is　proposed,　in　which　the　participants　develop　transaction　strategies　to　maximize　their　utility　and　submit　them　to　the　market,　and　then　clear　the　market　operators　to　maximize　the　social　welfare.　The　iterative　game　coordinates　the　supply　and　demand　relationship　of　market　electric　and　thermal　energy.　In　view　of　the　complexity　in　purchasing　and　selling　energy　transaction　strategy　of　regional　commercial　thermal　storage　station　and　commercial　electricity　storage　stations,　the　bidding　strategy　of　energy　storage　stations　is　optimized　by　introducing　the　bidding　quantity　control　coefficient.　Results　of　calculation　example　show　that　the　iterative　game　mechanism　can　achieve　market　equilibrium,　improve　participants＇　income　and　maximize　the　social　welfare.　Participation　of　commercial　energy　storage　stations　in　the　transaction　can　increase　the　utilization　rate　of　distributed　renewable　energy　in　the　regional　energy　market　and　realize　the　optimized　transaction　of　electric　and　thermal　energy,　which　has　good　flexibility　and　economy.　©　2022　Automation　of　Electric　Power　Systems　Press.