C4F7N　has　showed　much　importance　as　one　of　the　most　promising　environmentally　friendly　gases　to　submit　SF6　in　power　industry,　due　to　its　good　dielectric　strength　and　environmental　characteristics.　Zinc　and　aluminum　are　both　frequently-used　metal　material　in　GIS　as　construction　and　coating.　Since　the　presence　of　water　and　oxygen,　which　is　hard　to　avoid　during　manufacture　and　operation,　the　metal　may　be　oxidized.　Meanwhile,　Aluminum　oxide　has　been　widely　used　as　insulation　materials,　of　which　the　stability　when　exposed　in　C4F7N　is　very　important　for　the　long-term　stable　operation　of　electrical　equipment.　Therefore,　the　compatibility　between　insulation　gas　C4F7N　with　alumina　and　zinc　oxide　need　to　be　carefully　verified　for　the　engineering　application　of　the　novel　gas.　In　this　article,　the　compatibility　was　studied　by　both　thermal　compatibility　experiments　and　density　functional　theory　calculation.　The　thermal　ageing　test　were　performed,　and　the　scanning　electron　microscope　(SEM)　and　X-ray　photoelectron　spectroscopy　(XPS)　analysis　were　used　on　the　solid　powders.　In　the　meantime,　the　adsorption　energy,　total　charge　transfer,　density　of　states　and　electron　density　difference　of　the　gas　molecular　on　solid　surface　were　calculated　to　evaluate　their　interactions.　The　results　demonstrate　that　C4F7N　shows　certain　compatibility　with　the　two　metal　oxide.　©　2021　IEEE.