Graphene reinforced resin matrix composites have low density and excellent electromagnetic wave absorption properties, and are highly promising radar stealth absorbing materials. However, traditional graphene absorbing composite materials have complicated processes, making it difficult to prepare and manufacture complex structures. As an artificial electromagnetic medium, metamaterial is designed based on the electromagnetic properties of the material, and can realize the design of high-performance metamaterial absorber (MMA) through the design of unit cell structure, and can achieve the integrated manufacture of resin matrix MMA functional structure, taking advantages of rapid prototyping for complex structural parts using 3D printing technology. The research progress of the absorbing properties of graphene reinforced resin matrix composites and 3D printing metamaterials is emphasized. A 3D printed graphene reinforced polylactic acid composite gradient metamaterial absorbing structure based on wood pile structure is proposed. In the 4.5–40GHz band, this structure has an ultra broadband microwave absorption performance of 35.5GHz (reflection loss below –10dB).