Laboratory　simulation　of　aging　cannot　restore　the　complex　aging　behavior　of　bitumen　well.　The　objective　of　study　is　to　reveal　the　role　of　various　field　aging　factors　on　the　aging　process　of　virgin　bitumen　and　SBS(Styrene-Butadiene-Styrene)-modified　bitumen.　The　influence　of　different　field　aging　factors　on　aging　behavior　of　virgin　bitumen　and　SBS-modified　bitumen　were　discussed.　To　achieve　this　goal,　three　different　field　aging　styles　were　used　to　carry　out　field　aging　of　virgin　bitumen　and　SBS-modified　bitumen.　The　aging　behavior　of　the　two　types　of　bitumen　were　characterized　based　on　rheological　performance,　and　the　influence　degree　of　various　aging　factors　on　the　rheological　performance　of　bitumen　was　quantitatively　analyzed　through　the　contribution　rates.　The　findings　indicated　that　field　aging　had　an　obvious　influence　on　the　rheological　performance　of　the　two　types　of　bitumen,　which　showed　that　the　complex　modulus,　G-R　parameter　and　stiffness　modulus　increased,　and　creep　rate　decreased.　The　contribution　rates　significantly　indicated　the　degree　of　influence　of　hot　oxygen,　light　and　other　factors　(wind,　water,　dust,　etc.)　on　the　two　types　of　bitumen.　Among　them,　hot　oxygen　was　the　main　factor　leading　to　the　aging　of　two　types　of　bitumen.　The　virgin　bitumen　was　not　sensitive　to　aging　caused　by　light,　and　the　aging　of　SBS-modified　bitumen　was　greatly　affected　by　light.　Other　field　aging　factors　(wind,　water,　dust,　etc.)　led　to　the　aging　of　virgin　bitumen　to　a　certain　extent,　but　inhibited　the　aging　of　SBS-modified　bitumen.