Accelerated　aging　methods　commonly　used　in　laboratories　struggle　to　replicate　the　outdoor　aging　process　of　asphalt　binder.　The　aim　of　this　study　is　to　elucidate　the　impact　of　different　environmental　factors　on　the　aging　of　asphalt　binder　and　recreate　the　exposure　process　of　asphalt　binder.　To　achieve　the　study＇s　objectives,　the　asphalt　binder　was　subjected　to　various　environmental　conditions　through　different　aging　modes.　Three　exposure　modes　(all　environmental　factors,　the　effects　of　light,　temperature,　oxygen,　the　effects　of　temperature,　oxygen,　and　others)　were　established　to　assess　the　impact　of　various　environmental　factors　on　asphalt　binder　aging　behavior.　This　mode　was　labeled　O+UV-aging,　earning　it　the　name　O-aging.　The　aging　behaviors　were　assessed　across　multiple　dimensions,　considering　apparent　morphology,　rheological　properties,　and　chemical　composition.　The　study＇s　findings　highlight　that　factors　such　as　ultraviolet　radiation　are　primarily　responsible　for　the　formation　of　micro-cracks　and　increased　surface　roughness　in　aged　asphalt　binder.　Ultraviolet　radiation　significantly　affected　the　aging　of　asphalt　binder　during　outdoor　exposure.　SBS　modifiers　increased　the　risk　of　fatigue　cracking　in　the　virgin　asphalt　binder　but　enhanced　its　aging　resistance.　After　All-aging,　the　G-R　parameter　increase　of　virgin　asphalt　binder　was　2.6　times　that　of　SBS-modified　asphalt　binder.　Throughout　the　exposure　process,　the　broken　molecular　chains　and　the　original　molecular　chains　in　the　asphalt　binder　underwent　polymerization　reactions,　resulting　in　longer　carbon　chains　and　cycloalkane　aromatization.　It　was　discovered　that　exposure　showed　less　effect　on　the　characteristic　functional　groups　of　SBS-modified　binder　than　on　virgin　binder.　After　All-aging,　the　carbonyl　index　of　SBS-modified　asphalt　binder　was　56.4%　higher　than　that　of　virgin　asphalt　binder.