Co50 alloy coating and Co50 composite coatings doped with different mass fractiones of TiC were prepared by a 6 kW transverse-flow CO2 laser to improve the wear resistance of H13 die steel. The bonding characteristics, phase composition and wear behaviors of the coatings were investigated by X-ray diffractometry(XRD), Scanning Electron Microscopy(SEM) and high-temperature wear tester. The experimental results indicate that Co/TiC composite coatings with the content of TiC less than 20% (weight percentage) show good metallurgical bonding characteristics with the substrate surface. In addition, the micro-hardness of TiC/Co based coatings increases with the TiC content, but matrix phase composition of the composite coatings tends to be simple: Co+10%TiC coating consists of TiCo3, Cr2Ni3 and Cr-Ni-Fe-C phases, while Co+20%TiC coating is Cr2Ni3 and γ-Co, and Co+30%TiC coating mainly is composed of γ-Co solid solution. Co+20%TiC coating shows better wear behavior than Co50 coating, as well as has a more stable friction coefficient. Moreover, the high-temperature wear is mainly caused by oxidation wear and fatigue wear.These results demonstrate that Co+20%TiC composite coating has good comprehensive properties.