Abstract: According to the requirement of the density and thickness when the density distribution index p=2 in the density distribution function, the green tapes with different composition and thickness were laminated and then sintered to prepare Mg-Cu density graded materials. XRD, metallographic analysis, SEM, and ultrasound scanning microscope (USM) were used to characterized the material microstructure and combination between different layers. The results show that Mg-Cu density graded material is dense. The parallelism and flatness of intermediate layer are good and the combination is tight. The interface diffusion of different layers is not obvious. The density distribution in thickness direction meets the design requirement of the density distribution function(p=2).