In　this　study,　Al-Cu　alloy　suitable　for　laser　powder　bed　fusion　(LPBF)　is　rapidly　developed　through　casting　and　laser　remelting.　The　microstructure　of　as-cast　Al-Cu　alloy　is　consisted　of　equiaxed　grains,　and　it　was　significantly　refined　after　remelting.　The　Vickers　hardness　in　the　remelted　zone　improved　by　approximately　33.7%　compared　with　that　of　as-cast　Al-Cu　alloy.　The　effects　of　different　element　content　on　Al-Cu-Mg-Zr　alloy　were　analyzed,　and　optimum　alloy　composition　was　obtained　with　Al-5Cu-2Mg-1Zr-0.3Mn-0.15Ti　through　comparing　microstructure,　the　hardness　and　other　properties　after　remelting.　The　nano-indentation　hardness　and　Young＇s　modulus　of　remelted　Al-5Cu-2Mg-1Zr-0.3Mn-0.15Ti　alloys　were　1.86　and　86.7　GPa,　respectively.　The　microstructure　was　dense　without　obvious　crack　after　LPBF　forming,　and　the　tensile　strength,　yield　strength　and　elongation　values　reach　483　MPa,　365　MPa　and　13.4%　after　solution　treatment.　(C)　2022　Published　by　Elsevier　B.V.