A composite solid coatings was prepared by solid lubricants(MoS2,WS2,Sb2O3) and cubic boron nitride(CBN) ,and the optimum ratio of several solid lubricants in the composite solid coatings was determined by orthogonal test.The tribological properties of the composite solid coatings at high temperature and high pressure were studied.The test results show that,when the mass ratio of CBN,WS2,MoS2 and Sb2O3 is 3∶2∶2∶1,the prepared composite solid coating has the lowest friction coefficient,and CBN and WS2 plays an important role of friction reducing and wear resistance in the composite coatings.The prepared composite solid coating has excellent properties of friction reducing and wear resistance at high temperature and high pressure,its friction coefficient is increased with the increasing of temperature,and decreased with the increasing of pressure.