Abstract: The application of additive manufacturing technology in equipment maintenance has become an important way to enhance equipment support capabilities. With its fully digital manufacturing characteristics, additive manufacturing technology can quickly manufacture urgently needed spare parts or repair damaged parts of equipment in emergency situations. In wartime, it can form an effective supplement to the existing support capabilities and greatly improve the emergency support capabilities of equipment. The automotive additive manufacturing equipment, main processes, key technologies, wartime characteristics and other aspects were reviewed, the current research status of additive manufacturing technology in the field of equipment maintenance support were clarified, and the difficulties and challenges faced by the current wartime application were analyzed, so as to provide reference for the application of additive manufacturing technology in wartime equipment support engineering.