TiN-TiB/Ti based composite coating is prepared on Ti-3Al-2V by laser cladding using different molar ratios of Ti and BN, the molar ratios of Ti to BN are 16:1, 8∶1 and 4∶1, respectively. The coating is evaluated and characterized by means of X- ray diffraction (XRD), scanning electron microscope (SEM), electron probe microanalyzer (EPMA) and transmission electron microscope (TEM), micro- hardness tester and wear testing machine. The results reveal that: 1) B content has great effect on the microstructure and distribution of phase TiB; 2) TiB nucleates and grows when solubility of B is satisfied to form TiB. Besides, TiB tends to grow on the surface of TiN or grain boundary; 3) with increased BN content, the microhardness and friction performance is improved. The maximal hardness is about 5 times of the substrate. The wear depth is less than half of that of the substrate.