To　deal　with　the　problem　of　the　increasing　operating　loss　of　a　distribution　network　caused　by　the　disorderly　large-scale　charging　of　electric　vehicles　(EVs),　a　charging　optimization　strategy　guided　by　the　dynamic　tariff　mechanism　of　a　subregion　is　proposed.　The　dynamic　electricity　price　mechanism　is　to　establish　different　dynamic　electricity　prices　according　to　the　load　characteristics　in　different　regions　to　optimize　EV　charging　in　the　corresponding　regions.　The　dynamic　electricity　price　model　taking　into　account　the　total　charging　power　of　the　charging　station　is　established　in　the　commercial　area,　and　the　dynamic　electricity　price　model　taking　into　account　wind　and　photovoltaic　power　output　is　adopted　in　residential　and　office　areas.　A　charging　benefit　coefficient　model　is　proposed　to　improve　the　charging　time　satisfaction　of　users　in　residential　and　office　areas.　Finally,　the　simulation　results　on　the　IEEE33-node　system　show　that　the　EV　charging　optimization　strategy　proposed　can　not　only　guarantee　the　interests　of　the　car　owners,　but　also　reduce　network　loss,　improve　the　voltage　quality　of　the　distribution　network,　promote　wind　and　photovoltaic　power　consumption,　and　enhance　the　economy　of　the　distribution　network.　©　2024　Power　System　Protection　and　Control　Press.　All　rights　reserved.