Abstract: Hydroxyapatite (HA)/yttria stabilized zirconia (YSZ)/Ti-6Al-4V composite coatings have been fabricated by magnetron sputtering.X-ray diffraction,scanning electron microscopy and scratch testing were used to characterize the properties of the composite coating.The HA/YSZ composite coatings could be successfully deposited on Ti-6Al-4V alloy.The main phases of the composite coatings are HA,ZrO2 and Y2O3.Moreover,there is a small amount of TCP and CaO phases in the composite coatings.The surface morphology of the composite coating is porous,which is helpful for bone-like tissue to grow.The roughness,thickness,and adhesion of the HA/YSZ/ Ti-6Al-4V composite coating are about 140 nm,4 μm,and 80 N respectively.