Two　organic　layered　double　hydroxides　(OLDHs)　intercalated　by　UV　absorbents　of　para-aminobenzoic　acid　(PABA)　and　cinnamic　acid　(CA)　were　synthesized　by　the　anion-exchange　method,　and　their　structures　and　properties　were　characterized.　Then,　the　two　OLDHs　were　applied　to　modify　asphalt　together　with　two　different　antioxidants,　octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate　(1076)　and　pentaerythritol　tetrakis　(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate)　(1010),　aiming　at　synergistically　enhancing　the　aging　resistance　of　asphalt.　The　aging　behaviors　of　modified　asphalt　were　evaluated　by　the　analyses　of　physical　properties　and　chemical　structures　of　modified　asphalt　after　pressurized　aging　vessel　(PAV)　and　ultraviolet　(UV)　aging　tests.　The　results　indicated　that　PABA　and　CA　were　successfully　intercalated　into　the　interlayers　of　LDHs　and　that　the　lipophilicity　and　UV　absorbance　of　LDHs　were　significantly　improved　due　to　the　organic　intercalation.　Hence,　OLDH-modified　asphalt　presented　enhanced　anti-UV　aging　performance　compared　with　LDH-modified　asphalt.　Meanwhile,　the　addition　of　organic　LDH/antioxidant　composites　could　further　improve　the　antiaging　performance　of　asphalt,　including　thermal-oxidation　and　photo-oxidation　aging　resistance,　exhibiting　a　synergistic　effect.　Furthermore,　different　combinations　of　OLDHs　and　antioxidants　had　different　improvement　effects　on　the　aging　properties　of　asphalt;　to　be　specific,　the　composites　of　1076/PABA-LDHs　and　1010/CA-LDHs　were　superior　to　those　of　1010/PABA-LDHs　and　1076/CA-LDHs,　respectively,　in　promoting　the　aging　resistance　of　asphalt.　©　2022　American　Chemical　Society.