This　work　systematically　proposes　a　solar　photocatalytic　ventilation　wall　(SPVW)　coupling　of　solar　photocatalytic　purification　technology　and　solar　ventilation　wall.　The　numerical　simulation　is　firstly　conducted　to　predict　the　thermal　performance,　ventilation　performance　and　purification　performance　under　different　parameters,　such　as　solar　radiation　intensity,　physical　dimension　and　inlet　temperature　of　the　solar　ventilation　wall,　describing　the　interrelationship　between　the　flow　and　mass　transfer　characteristic.　Subsequently,　the　energy　and　exergy　analysis　of　the　SPVW　system　is　theoretically　presented　to　clarify　the　energy　distribution　and　exergy　flow.　From　the　obtained　results　it　is　concluded　that　the　system　coupling　of　natural　convection　and　solar　photocatalytic　technology　can　be　effectively　applied　for　heating,　ventilation　and　pollutant　purification.　The　effects　of　ambient　temperature,　H/W　and　solar　radiation　intensity　on　above　evaluation　are　outstanding,　and　wherein　the　purification　performance　increases　with　the　increase　of　solar　radiation　intensity,　whose　excellent　overall　purification　performance　reaches　18.45　m3/h　of　CADR　at　12:30.　In　addition,　the　energy　and　exergy　flows　through　different　components　in　the　entire　system　are　revealed,　owing　an　irreversible　loss　of　22.14%　in　solar　photocatalytic　process.　This　paper　will　provide　theoretical　basis　and　technical　support　not　only　for　improving　utilization　efficiency　of　solar　energy,　but　also　promoting　development　of　SPVW.　©　2023　IBPSA.All　rights　reserved.