Abstract: To obtain composite material with low infrared emissivity and laser reflectivity,ZAO/SmBO₄ nano-composited particle was prepared with nanometer compounding technique.It has obtained the low reflection of laser in 1.06μm and the low reflection of infrared in 8-14μm.Heat treatment temperature was fixed by heat analysis on composite intermediate of ZAO and ZAO/SmBO₄.The structural properties of the SmBO₄、ZAO/SmBO₄ particles were investigated by using TG,XRD and SEM,respectively.Optical properties of ZAO/SmBO₄ composites were studied by UV-3101PC and Infrared emissing ability measuring instrument.The selection of a proper SmBO₄ particle size and the SmBO₄ content is important to obtain low reflectivity and emissivity.The results show that the particle size of SmBO₄ is 97nm and nSm:nZn is 0.5,which fulfils the desire for packaging materials of low reflectivity and emissivity.The reflectivity and emissivity is 0.33% and 0.68.