High temperature wear behavior of in Situ composite NiAl-Al2O3-TiC against SiC under dry sliding from 600℃ to 900℃ was investigated on a ball-on-disc test rig. NiAl-Al2O3 -TiC exhibited excellent self-lubricating property, i. e. , its friction coefficient and wear rate were lower than those of K44 in the range of 700 ～ 900℃. However, its friction coefficient and wear rate were higher than those of K44 at 600℃. The self-lubricating property is attributed to the formation of 1～2μm nanometer oxide. Protective oxide layer constituent was partially transferred to the counterface, and avoided the direct contact between NiAl-Al2O3-TIC and SiC ceramics. Hot press thermal sintering of oxide particle are the formation mechanism of the protective layers. NiAl-Al2O3-TiC acted as transferring stress and supporting for protective layer. With increase of test temperature, decrease in strength and hardness of NiAl-Al2O3-TiC led to abscission and cracking of protective layer.