The work aims to study the effect of nano fillers composited lanthanum oxide on the friction and wear properties of auto friction plates. CaSiO3, nano SiC and nano B4C composited lanthanum oxide reinforced auto friction plates were fabricated by hot pressing, and the friction samples were tested at 100~350 ℃. The phase composition, chemical composition and microstructure of the friction samples were analyzed by XRD, EDS, SEM and 3D non-contact surface morphology instrument. The evolution law of the nano-fillers on the friction and wear of friction plates was summarized and the mechanism of action in the process of friction and wear was explored. The friction coefficient of the sample with nano SiC fillers at high temperature increased obviously, which was 0.49 at 300 ℃ and 0.5 at 350 ℃ respectively, but the wear rate was high and the maximum value was high as 0.35×10?7 cm3/(N.m). The wear surface of the sample was relatively flat and the wear marks were shallow. The friction coefficient of the sample with nano B4C fillers was low and relatively stable. The wear rate at high temperature was low, which was 0.2×10?7 cm3/(N.m) at 300 ℃. The wear surface of the sample was smooth and the wear marks were the shallowest. The interface lubricity is improved by the boron oxide in the sample with nano B4C fillers, and the wear surface morphology and quality are the best. The small particles with high hardness have enhanced the mechanical meshing force of the material. The friction and wear properties have been improved. Hard particles of nano SiC fall off easily in the process of wear, causing damage to the wear surface and increasing wear.