The nano-ceramic coating was prepared by plasma spraying with nano Al₂O₃-13%TiO₂ powders as raw material added a small amount of La₂O₃. The friction properties were tested on the MMS-1G highspeed friction and wear tester, and the morphology was observed after wear by scanning electron microscopy. The results showed that the coatings exhibit typical layered structure and have a good bonding interface. In the high-speed friction and wear test, the coating friction coefficient is decreases with the increase of the load, and the expansion of micro-crack causes the coating to peel off, leading the wear rate to increase.