The　fabrication　of　graphene/metal　matrix　composites　by　selective　laser　sintering(SLS)technique　has　been　exten-sively　studied;however,the　complex　microstructure　and　residual　stress　limit　their　further　applications.Herein,the　sintering　behavior　of　graphene/aluminum(Gr/Al)com-posites　is　studied　using　an　all-atom　model.The　effect　of　sintering　temperature　and　Al　particle　size　on　densification　is　investigated　based　on　molecular　dynamics(MD)simu-lations.The　results　reveal　that　the　higher　sintering　tem-perature　and　smaller　particle　size　are　conducive　to　the　improved　sintering　quality　of　Gr/Al　composites.Then,a　large-scale　laser　sintering　model　of　Gr/Al　composites　is　established　and　the　sintering　process　is　simulated　using　optimal　sintering　parameters.The　evolution　of　microstructure　and　residual　stress　of　Gr/Al　composites　during　SLS　are　investigated　in　detail.The　results　indicate　that　the　epitaxial　growth　of　Al　grains　plays　a　dominant　role　in　grain　growth,promoting　the　formation　of　nanoscale　single　crystals.Therefore,stress　concentration　occurs　at　the　voids,microcracks　and　Gr/Al　interfaces,but　not　at　the　stacking　faults.What＇s　more,the　distribution　characteris-tics　of　residual　stress　components　in　Gr/Al　composites　are　affected　by　Gr/Al　interaction.