The NWA 8545 is a basaltic achondrite paired with the carbonaceous achondrite NWA 011. Carbonaceous meteorites (CCs) are considered to have formed in the outer solar system and are distinguished from the Non- carbonaceous meteorites (NCs) that come from the inner solar system using isotopic anomalies. The NWA 8545 and its paired meteorites are the only groups of basaltic achondrites that might record the magmatic process on their parent body. Here we report the petrology and mineralogy of the NWA 8545 obtained using scanning electron microscope (SEM), electron- probe microanalysis (EMPA), and laser ablation- inductively coupled plasma- mass spectrometer (LA- ICP- MS). Based on mineral modal abundances, this work calculated the whole? ock REE concentrations. The result demonstrated that the NWA 8545 and Eucrites have similar major elemental and REE distribution characteristics. All minerals (pyroxene, plagioclase, and merrillite) exhibit positive Ce anomaly. However, Ba and Sr are not enriched in pyroxene, which means that the meteorite suffered only limited terrestrial weathering. The thermal metamorphism degree of the NWA 8545 is similar to Type 5 Eucrite. The REE contents of the equilibrium magma of pyroxene and plagioclase are similar to the bulk REE concentrations of the NWA 8545, which implies that pyroxene and plagioclase may crystallize simultaneously in a closed system. Combining the metamorphism process and the magmacontent, this work implies that the NWA 8545 may have erupted from its parent body after fractional crystallization and crystallized rapidly near the surface.