The research progress on the technologies related to the additive manufacturing of aluminum alloys is introduced. The advantages and development prospects of the selective laser melting, wire-arc additive manufacturing and laser-arc hybrid additive manufacturing in the field of additive manufacturing of aluminum alloys are focused. The results show that the study of selective laser melting is mainly focused on the improvement of the efficiency of space filling of formed parts, the control of microstructure and the improvement of mechanical properties. The present efficiency of space filling of formed parts is close to 100%, the microstructure and mechanical properties are better than those of the casting parts, but worse than those of the forging parts. The research on the wire arc additive manufacturing is mainly focused on the size control of large scale structures, but the improvement of performance is limited by the relatively large heat input. As for the laser-arc hybrid additive manufacturing, the related research is few, and it is the future prospect to improve the corresponding process technique and the laser-arc coupling behavior.