A　Fe　doped　BaSnO3　(Fe-BaSnO3)　photocatalyst　was　synthesized　by　a　decomposition　method　of　the　peroxoprecursor.　The　Fe-BaSnO3　not　only　exhibited　a　great　activity　and　selectivity　in　NO　photocatalytic　oxidation　under　visible　light　but　also　showed　an　excellent　performance　in　terms　of　durability.　The　experimental　results　showed　that　doping　Fe　ions　into　BaSnO3　produced　more　oxygen　vacancies　(OVs)　and　visible　light　further　promoted　the　formation　of　OVs,　which　was　beneficial　to　the　formation　of　reactive　oxygen　species　(ROS).　The　Fe　ions　benefited　to　convert　NO　to　a　high-energy　NO+,　which　was　easily　deep-oxidized　into　nitrate.　Moreover,　the　alkaline　earth　metal　ions　(Ba2+)　could　store　the　nitrate　or　nitrite　generated　by　the　NO　oxidation,　resulting　in　exposing　the　active　sites　at　Fe　ions　and　then　maintaining　the　durable　oxidizing　NO　over　Fe-BaSnO3.　This　work　may　shed　light　on　a　novel　strategy　for　developing　high-efficiency　photocatalysts　for　durable　deep　oxidation　of　NOx.