This paper mainly introduces the selective laser melting (SLM) forming technology of cast aluminum alloy. The research status of SLM forming process and heat treatment process of SLM forming parts of ZL1××–ZL4×× series cast aluminum alloys at home and abroad
as well as their engineering application in the field of aviation industry were summarized and analyzed. In addition
the exiting problems and development trend of SLM forming technology for casting aluminum alloy were discussed further.