Aluminum alloy additive manufacturing has attracted extensive attention in the manufacturing of aerospace structural components due to the advantages of lightweight materials and the characteristics of additive manufacturing technology in material utilization and complex structure manufacturing. Aiming at the application of aluminum alloy additive manufacturing in aerospace field， this paper analyzes the research status and existing problems of aluminum alloy additive manufacturing technology through three representative processes of wire arc additive manufacturing， selective laser melting and laser melted deposition. And the application status and future development of aluminum alloy additive manufacturing technology in aerospace field are briefly described.