Abstract: VN-Ag-MoO₃ composites were prepared by vacuum hot pressing sintering. The effects of Ag₂MoO₄ on the microstructure and wide temperature range friction and wear properties of VN matrix composites were investigated. The results show that the structure of VN-Ag-MoO₃ composite is relatively compact, mainly composed of VN, MoO₃ and Ag, and the MoO₃ and Ag distributed evenly in VN matrix are formed by the decomposition of Ag₂MoO₄ at high temperature. Friction and wear tests in a wide temperature range show that the addition of Ag₂MoO₄ can effectively improve the friction and wear properties of VN ceramics in the temperature range of room temperature (RT)-700℃. The friction coefficient (0.285) and wear rate (1.37×10⁻⁵ mm³/(N·m)) of VN-10Ag-MoO₃ with 10wt% Ag₂MoO₄ at 700℃ are 23% and 72% lower than those of VN, respectively, which are attributed to the excellent lubrication and wear reduction effects of high temperature lubrication phases such as vanadium oxide, silver vanadate and silver molybdate on the wear surface.