The Al2O3-13%TiO2 and WC composite coatings were deposited by air plasma spraying technology.The dynamic anti skidding and wear resistance in high speed of the coatings were investigated by MMS-1G high speed tribometer,and the wear mechanism was analyzed.Results show that the anti-skidding prop-erty of the coatings are decreased with the increase of load and speed,and the WC coating is characterized as the most excellent anti skidding property in the same condition.The wear resistance of Al2O3-13%TiO2 coating is better than that of WC coating,and the wear rate of the coatings are increased with the increase of load and speed.The main wear mechanism of Al2O3-13%TiO2 coating is adhesion wear and spalling wear,and the brittle fracture aroused by the propagation of the crack become more dominant in the WC coating.