A infiltrationtype PbSnAgRE solid lubricant over a wide range of temperature (from 300 ℃ to 800 ℃) was designed.The effects of different compositions and proportions of PbSnAgRE solid lubricant on the wettability to M3/2 based metal ceramic preforms were studied.A selfmade infiltration furnace was used to infiltrate the metal ceramic preforms with molten soft metal lubricants.The friction and wear behaviors of the composites were investigated using XP5 type high temperature friction and wear tester.Images and structures of worn surfaces were analyzed by means of scanning electron microscopy（SEM）and Xray diffractometry（XRD）.The results show that different components have great influence on the wettability to the matrix.The wetting properties of PbSn solid lubricants were improved by adding Ag and RE,and it can also improve the friction and wear properties of selflubricating materials.The composites prepared by melt infiltration PbSnAgRE composite lubricant have a good selflubricating properties at high temperature,the friction coefficient is about 0.28 at 600 ℃.