In　this　study,　the　performance　and　modification　mechanism　of　EVA　(ethylene-vinyl-acetate)　modified　(EM),　EVA/SBS　(Styrene-Butadiene-Styrene)　modified　(ESM),　and　EVA/SBS/sulfur　modified　(ESSM)　bitumens　were　evaluated.　The　physical,　rheological,　morphological,　and　structural　properties　were　determined　before　and　after　aging,　and　compared　with　those　of　base　bitumen.　These　properties　were　evaluation　using　conventional　physical　methods,　Fourier　transform　infrared　spectrometer,　optical　microscopy,　dynamic　shear　rheometer,　and　bending　beam　rheometer,　respectively.　The　results　showed　that　sulfur　was　useful　in　bitumen,　EVA,　and　SBS　modification　by　forming　a　vulcanized　crosslinking　polymer　network.　The　vulcanization　improved　most　of　the　physical　properties　of　ESM　bitumen,　especially　high-　and　low-temperature　performance,　and　toughness　and　tenacity　(previously　not　evaluated　in　the　literature).　Meanwhile,　vulcanization　improved　the　compatibility　between　polymers　and　bitumen　and　increased　the　aging　resistance　of　ESM　bitumen.　Vulcanization　reactions　took　place　without　new　functional　groups　being　presented　in　the　infrared　spectrum.　©　2017　Wiley　Periodicals,　Inc.　J.　Appl.　Polym.　Sci.　2017,　134,　44850.　©　2017　Wiley　Periodicals,　Inc.