The　cinnamic　acid　intercalated　layered　double　hydroxides　(CA-LDHs)　were　prepared　by　anion　exchange　method　and　analyzed　by　X-ray　diffractometer　(XRD)　Fourier　transform　infrared　(FTIR)　spectrometer,　scanning　electron　microscopy　(SEM),　contact　angle　goniometer,　ultraviolet　and　visible　(UV-vis)　spectroscopy,　and　thermogravimetric　(TG)　analysis　system.　Then,　the　CA-LDHs　were　added　to　styrene-butadiene-styrene　(SBS)　modified　bitumen　together　with　an　antioxidant　composed　of　octadecyl-3-(3,5di-tert-butyl-4-hydroxyphenyl)-propionate　(1076)　and　tris(2,4-di-tert-butylphenyl)　phosphite　(168)　at　a　mass　ratio　of　1:1.　The　effects　of　antioxidant/CA-LDHs　on　the　physical　and　rheological　properties　and　chemical　composition　and　characteristics　of　SBS-modified　bitumen　before　and　after　pressurized　aging　vessel　(PAV)　and　ultraviolet　(UV)　aging　were　investigated.　The　results　revealed　that　CA　was　successfully　intercalated　into　the　interlayer　space　of　LDHs.　Meanwhile,　the　CA-LDHs　performed　improved　hydrophobicity　and　UV　absorption　capacity　compared　with　LDHs,　resulting　in　enhanced　compatibility　of　LDHs　with　SBS-modified　bitumen,　and　then　the　antiaging　properties　of　SBS-modified　bitumen　could　be　further　strengthened,　especially　the　anti-UV　aging　properties.　Moreover,　the　mixture　of　antioxidants　and　CA-LDHs　could　synergistically　improve　the　SBS-modified　bitumen＇s　thermal-　and　photo-oxidative　aging　resistance.　©　2023　American　Society　of　Civil　Engineers.