Sodium　dodecyl　sulfate　(SDS)　intercalated　layered　double　hydroxides　(LDHs)　were　prepared　to　enhance　the　ageing　resistance　of　SBS　modified　bitumen　(SMB).　X-ray　diffraction　(XRD)　and　Fourier　transform　infrared　spectroscopy　(FTIR)　showed　that　SDS　has　been　intercalated　into　the　interlayers　of　LDHs.　Compared　to　LDHs,　the　interaction　between　SDS　intercalated　LDHs　(OLDHs)　and　SMB　was　obviously　stronger,　and　OLDHs　exhibited　better　dispersity　and　stability　in　SMB.　After　ageing,　the　viscoelastic　properties　of　SMB　were　deteriorated.　LDHs　and　OLDHs　could　obviously　alleviate　the　deterioration　of　ageing　on　the　properties　of　SMB,　which　could　improve　the　ageing　resistance　of　SMB,　especially　OLDHs.　Additionally,　the　enhancement　mechanisms　of　OLDHs　and　LDHs　for　the　ageing　resistance　of　SMB　at　the　microscopic　scale　were　investigated　by　molecular　dynamics.　The　incor-poration　of　LDHs　could　obstruct　the　invasion　of　oxygen　into　the　interior　of　SMB　and　inhibit　the　diffusion　rate　of　oxygen　in　SMB,　which　reduced　the　oxidation　reaction　probability　of　SMB　during　ageing,　and　eventually　achieved　the　improvement　on　ageing　resistance　of　SMB.　The　effectiveness　of　LDHs　was　further　improved　after　SDS　intercalated　modification,　that　was,　SDS　intercalated　modification　was　beneficial　to　enhance　the　ageing　resis-tance　of　LDHs　for　SMB.