Lamellar Aluminosilicates-C18N+Me3(designated as LAS-C18N+Me3) was synthesized by hydrothermal method and using octadecyl trimethyl ammonium bromide (abbreviated as C18N+Me3) as template.The synthesized sample was characterized by powder X-ray diffraction(XRD),scanning electron microscopy(SEM),Fourier- transform infrared spectroscopy(FTIR) and thermal analysis(TG).The tribological properties of LAS-C18N+Me3 combined with ZDDP as additives in lithium grease were evaluated with a SRV-V reciprocating tribometer.The results illustrate that LAS-C18N+Me3 significantly improves the lubricating performance of base grease,and the optimal mass concentration is 5%.LAS-C18N+Me3combined with ZDDP at the mass radio of 5∶2 exhibits excellent synergistic effect on load-carring capaticy,friction reducing and anti-wear properties.The analysis results of steel disk wear surface indicate that physical adsorption film of LAS-C18N+Me3 and ZDDP tribochemical reaction film are formed on the rubbing surfaces,which hinder the direct contact between friction pairs,improve the tribological properties of base grease.