Based　on　molecular　dynamics　(MD)　simulation,　a　model　of　asphalt　confined　in　two　aggregates　was　constructed,　and　the　effects　of　tensile　rate　and　temperature　on　the　tensile　stressdisplacement　curve　of　asphaltaggregate　interface　were　studied.　The　tensile　failure　mode　and　adhesion　mechanism　of　asphaltaggregate　interface　were　analyzed　in　atomic　nanoscale.　By　fitting　the　tensile　stressdisplacement　curves,　the　cohesive　model　for　macro　numerical　analysis　was　proposed.　The　results　show　that　the　failure　of　asphaltaggregate　changes　from　adhesive　failure　to　cohesive　failure　when　the　tensile　stress　exceeds　the　peak　stress.　The　peak　stress　increases　with　the　tensile　velocity　and　decreases　with　the　temperature.　Before　the　tensile　stress　reaches　the　peak　stress,　the　asphalt　remains　in　an　elastic　state,　and　the　deformation　is　reversible.　When　the　tensile　stress　exceeds　the　peak　stress,　the　damage　is　irreversible.　©　2021,　Editorial　Department　of　Journal　of　Building　Materials.　All　right　reserved.