Recent research progress in improving the formability and mechanical properties of laser powder bed fusion (LPBF)aluminumalloysbymicroalloyingmethodsissummarizedinresponsetothehighcracksensitivityofconvention-alaluminumalloysinLPBF. Themechanismofmicroalloyingelementsinthemoldingprocessisreviewed.Theregula-tionofmicrostructurewhichisgrainrefinementbyErandZrelementsisdiscussed.ThemoldingprocessofLPBFmicro-alloyedaluminumalloyissummarized.Theheattreatmentprocessinducedsecondphasedispersionprecipitationandme-chanicalpropertiesaftermicroalloymodification areanalyzed.Thefutureresearch onmicroalloyingofLPBFaluminum alloysisproposed todevelopnewmicroalloyedmodifiedaluminumalloysandexploreheat treatmentprocessessuitable forindustrialproductiontoobtainlow-cost,high-strengthLPBFaluminumalloys.