Abstract: Tribological and tensile properties of nylon 1010 composite,filled with micro scale ceramic powder with surface treatment by silane coupling agents(KH-550),was investigated.Ceramic powders increased friction coefficient of the composite as well as decreased wear rate,and it also improved the composite's tensile strength in a certain range of contents.Ring on block tests show that ceramic/nylon composite with 5%~25% ceramic powder exhibited friction coefficient as high as 0.46,and friction coefficient decreased to 0.41 when containing 30%~40% ceramic powder.Ceramic/nylon composite with 5%~40% ceramic powder exhibited lower wear rate which is only 26%~42% of that pure nylon did.Ceramic powder improves nylon's mechanical properties,and its surface hardness increased linearly as fraction of ceramic powder increased.Ceramic powder increase tensile strength by 16.7% due to better bonding between ceramic powder and nylon.Ceramic/nylon composite exhibited lower wear rate because some surface nylon melted and shallow grooves formed instead of adhesion dominated in wear of pure nylon.