Dodecyltrimethoxysilane　surface　organic　layered　double　hydroxides　(LDHs)　was　synthesized　and　used　to　improve　the　aging　resistance　of　SBS　modified　bitumen　(SMB),　According　to　Fourier　transform　infrared　spectroscopy,　x-ray　diffraction　and　Contact　angle　meter,　dodecyltrimethoxysilane　has　been　chemically　grafted　onto　the　surface　of　LDHs　and　will　not　affect　the　crystal　structure　of　LDHs.　After　dodecyltrimethoxysilane　surface　organic　modification,　the　-OH　on　the　surface　of　LDHs　was　decreased,　meanwhile,　some　organic　groups　were　introduced　into　LDHs,　which　contributed　to　reducing　the　surface　hydrophilicity　of　LDHs.　Then,　the　physical,　rheological　properties　and　chemical　structure　of　SMB　containing　OLDHs　and　LDHs　before　and　after　aging　were　studied　thoroughly.　Compared　with　LDHs,　the　compatibility　of　OLDHs　in　SMB　has　been　significantly　enhanced.　Furthermore,　OLDHs　modified　SMB　exhibited　more　excellent　high-temperature　behavior.　After　aging,　bitumen　was　oxidized　and　SBS　was　degraded,　the　physical　and　rheological　properties　of　SMB　were　seriously　deteriorated.　The　addition　of　LDHs　can　suppress　the　destruction　of　aging　on　the　performance　and　chemical　structure　of　SBM,　and　enhance　the　aging　resistance　of　SBM.　The　enhancement　of　LDHs　has　been　notably　strengthened　after　dodecyltrimethoxysilane　surface　organic　modification.　©　2021　The　Author(s).　Published　by　IOP　Publishing　Ltd.