Aging characteristics and mechanical properties of biomedical ß type titanium alloy, Ti-29Nb-13Ta-4.6Zr, coated with calcium phosphate invert glass-ceramic were investigated. Vickers hardness values of cross sections of Ti-29Nb-13Ta-4.6Zr, TNTZ, conducted with dip-coating treatment, DCT, composed of a firing treatment, FT, at 1073 K for 0.9 ks or 3.6 ks followed by furnace cooling and conducted with only FT are almost the same, and are around 240 Hv. This value is much greater than that of TNTZ conducted with solution treatment, ST, at 1063 K for 3.6 ks. The increasing hardness is due to the precipitation of ω phase during FT. Tensile bonding strength of 5 urn thick coating layer of calcium phosphate invert glass-ceramic on TNTZ is not degraded by aging, but 20 μm thick coating layer is degraded. The modulus of elasticity of TNTZ conducted with DCT or aging after DCT is relatively greater than that of TNTZ conducted with solution treatment, that is, around 80 GPa and 110 GPa, respectively.