Abstract: With the chemical synthesis of zinc oxythiomolybdate (ZnMoO2S2), its characters were studied by thermal analysis and X-ray diffraction method. The tribological properties of ZnMoO2S2were studied by high-temperature pin on disc tester, the results show that ZnMoO2S2 has good lubricating property from room temperature to 700℃, especially from 100℃ to 300℃, the friction coefficient is about 0.1.