A　novel　7075/5356　aluminum　alloy　laminated　composite　was　fabricated　by　alternately　depositing　a　7075　wire　and　a　5356　wire　layer-by-layer　using　wire　arc　additive　manufacturing　(WAAM)　process.　The　microstructure,　mechanical　properties,　and　fracture　mechanism　of　the　produced　components　under　as-deposited　and　heat-treated　conditions　were　systematically　investigated.　Results　demonstrated　that　there　was　an　interlayer　formed　between　the　7075　layer　and　5356　layer,　which　shows　gradient　changes　in　the　number　of　second　phases　and　microhardness.　In　comparison　with　single　7075　aluminum　alloy　components,　the　heat-treated　7075/5356　aluminum　alloy　laminated　composite　exhibited　superior　comprehensive　mechanical　properties.　The　elongation　was　103.8%,　50.7%　higher　in　vertical　and　horizontal　directions,　while　the　tensile　strength　was　only　18.4%　and　14.3%　lower,　respectively.　The　fracture　modes　of　7075　layer　and　5356　layer　show　differences,　which　were　intergranular　fracture　and　intergranular-transgranular　mixed　fracture,　respectively.