To obtain the state equations of some materials at a high pressure, an iron-aluminum impedance match target for the experimental researches on the state equation of laser driving was prepared and the bonding technology of iron and aluminum films was studied. Both the cold rolled iron film and ultra-precision matching aluminum film were used as raw materials in this work, and the dependences of sample topography, thickness, crystallization properties and interfacial characteristics on process conditions were also researched. A white light interferometer, a scan electron microscope(SEM) and an X-ray diffractometer(XRD) were employed to further reveal the revolution rules of the above parameters and to hold the changing trend of these parameters. Based on the optimized processing conditions, a higher quality target without micro-defect was prepared successfully, and its roughness is less than 100 nm, thickness uniformity is lower than 100 nm and the diffusion layer thickness is about 200 nm. These excellent physical properties verify that the final target significantly meets the requirements of state equation of experiments.