Graphene　considered　as　an　ideal　reinforcement　for　metal　matrix　composites　(MMCs)　because　of　its　excellent　optical,　electrical　and　mechanical　properties　has　important　application　prospects　in　materials　science,　micro-nano　processing　and　so　on.　Meanwhile,　additive　manufactured　MMCs　becomes　the　hotspot　of　current　research　due　to　the　advantages　of　precise　and　controllable　structure　and　easy　implementation　of　modularization.　In　this　paper,　a　two-dimensional　rate-dependent　crystal　plasticity　model　using　the　numerical　model　is　developed　to　simulate　the　mechanical　behaviors　of　additive　manufactured　graphene-reinforced　aluminium　matrix　composites　(AMCs)　under　tensile　load　in　a　mesoscale.　The　mechanical　properties　are　described　by　varying　the　volume　fractions　and　distribution　patterns　of　graphene.　The　results　verify　that　graphene　is　the　main　load-bearing　part　of　AMCs.　The　volume　fraction　and　distribution　pattern　of　graphene　play　an　important　role　in　the　crystal　dislocation　strengthening　of　AMCs.　Moreover,　it　is　proved　that　the　additive　manufactured　graphene-reinforced　AMCs　have　a　potential　improvement　with　increased　graphene　volume　fraction　and　optimized　geometric　graphene　parameters.　©　Published　under　licence　by　IOP　Publishing　Ltd.