2-hydroxy-4-methoxybenzophenone-5-sulfonic　acid　(ultraviolet　absorbent,　BP)　intercalated　layered　double　hydroxide　(LDH)　was　synthesized　to　enhance　the　anti-ageing　properties　of　styrene–butadiene–styrene　block　copolymer　(SBS)　modified　bitumen　(SMB).　X-ray　diffraction　and　UV–vis　spectroscopy　indicated　that　BP　has　been　successfully　substituted　into　LDH　interlamination,　and　BP　intercalated　LDH　(BP-LDH)　exhibited　better　UV　absorptive　capacity　than　LDH.　Then,　the　physical　and　rheological　properties,　chemical　structure　of　BP-LDH　and　LDH　modified　SMB　before　and　after　ageing　were　comprehensively　studied.　Compared　with　LDH,　BP-LDH　possessed　the　smaller　difference　in　solubility　parameters　(δ)　and　the　stronger　interaction　energy　(Einter)　with　SMB,　resulting　in　the　better　compatibility　of　BP-LDH　modified　SMB.　The　high-temperature　stability　of　SMB　was　promoted　with　the　addition　of　BP-LDH　or　LDH,　especially　BP-LDH.　After　ageing,　the　temperature　susceptibility,　low-temperature　anti-cracking　and　anti-fatigue　cracking　of　SMB　were　deteriorated,　the　oxygen-containing　groups　(C　=　O　and　S　=　O)　in　SMB　noticeably　increased　and　carbon–carbon　double　bond　(C　=　C)　concurrently　decreased.　LDH　could　mitigate　the　ruin　of　ageing　on　the　performance　and　chemical　structures　of　SMB,　and　strengthen　the　anti-ageing　performance.　Furthermore,　BP　intercalated　modification　could　further　significantly　heighten　the　performance　of　LDH.　©　2024　Elsevier　B.V.