This　paper　aims　to　investigate　the　effect　of　different　environmental　conditions　on　the　aging　properties　of　virgin　asphalt　binder　and　evaluate　the　magnitude　of　aging　on　asphalt　binder　under　different　environmental　conditions.　The　effect　of　thermal,　oxidative　and　ultraviolet　aging　on　the　rutting　resistance,　fatigue　resistance　and　cracking　resistance　of　virgin　asphalt　binder　was　characterised　based　on　rheological　parameters.　The　contribution　rate　of　different　environmental　factors　to　the　aging　of　asphalt　binder　was　quantitatively　analysed.　Results　showed　that　high　temperature　repaired　cracks　in　the　asphalt　binder　caused　by　ultraviolet　aging.　The　single　aging　factor　of　heat,　oxygen　and　light　had　little　effect　on　the　rheological　properties　of　asphalt　binder.　High　temperature　and　oxygen　would　accelerate　the　aging　effect　of　the　asphalt　binder　aging　process.　Thermal-oxidative-UV-coupled　aging　had　a　more　pronounced　effect　on　the　aging　of　asphalt　binder　than　thermal-oxidative　aging.　The　fatigue　resistance　of　asphalt　binder　is　more　sensitive　to　the　response　of　aging.　The　contribution　rates　of　thermal-UV　aging,　UV-oxidative　aging　and　thermal-oxidative　aging　were　all　greater　than　the　sum　of　the　contribution　rates　of　the　two　corresponding　single　factors.　The　aging　of　asphalt　binder　was　mainly　due　to　thermal-oxidative　aging　when　the　aging　temperature　exceeded　80　degrees　C.