As　one　of　the　important　indicators　of　the　pavement　performance　of　asphalt,　the　adhesion　performance　of　asphalt-aggregate　has　an　important　impact　on　the　durability　of　the　road.　The　adhesion　mechanism　of　an　asphalt-aggregate　interface　is　studied　by　molecular　dynamics　simulation.　A　shear　system　model　for　asphalt　is　constructed,　confined　to　two　aggregates,　and　the　shear　simulation　is　performed　at　different　pressures,　temperatures,　and　shear　velocities.　The　relationship　between　stress　and　displacement　is　investigated.　According　to　the　changes　in　the　asphalt　model　for　the　shear　process,　the　form　of　the　failure　and　the　failure　mechanism　of　the　interface　can　be　analyzed　under　different　conditions.　Results　show　that　the　asphalt　near　the　asphalt-aggregate　interface　has　obvious　signs　of　stratification　along　a　direction　parallel　to　the　interface　during　the　process　of　applying　pressure,　the　greater　pressure　applied,　the　greater　speed　variation　rate　between　the　asphalt　and　the　aggregate.　The　shear　strength　limit　has　a　linear　relationship　with　pressure　and　temperature　and　a　nonlinear　relationship　with　velocity.　The　cohesion　zone　mathematical　model　and　its　series　parameter　values　suitable　for　larger-scale　numerical　analysis　are　obtained　by　fitting　the　curve　for　the　stress　displacement　of　the　shear　process.