Abstract:Additive manufacturing technology (3D printing) is an important development direction of advanced manufacturing technology, which has been applied to aerospace, automotive industry, biomedicine and other important fields. Since the first exfoliation of single-layer graphene in 2004, graphene and other two-dimensional crystal materials have gradually become a research hotspot in the field of composite materials. Its excellent mechanical properties and conductivity make it more suitable for reinforced phase materials. By adjusting the content and distribution of graphene reinforcement phase, the mechanical strength, conductivity and other properties of metal matrix materials can be greatly improved, and excellent structure function integrated materials can be obtained. Laser additive manufacturing technology combined with the advantages of high specific surface area and anisotropy of graphene nanosheets, further processing and mixing of graphene and metal powder, and then layer by layer printing to construct 3D structure, has become a new research direction, which is leading the progress of the fourth generation of industrial revolution. Based on laser additive manufacturing technology, this paper summarizes the research progress of graphene based metal matrix composites prepared by laser additive manufacturing technology from three aspects, that is, graphene based aluminum, nickel and other metal matrix composites prepared by laser additive manufacturing technology. The forming process and material properties are compared, and the possible development direction in the future is analyzed.