To evaluate the preventive effects of methanolic extract of Angelica koreana(MEAK), this extract was given to rats orally at various doses of 10, 50 and 100 mg/kg before hepatotoxicant, benzo$(alpha)pyrene$ treatment The increased serum enzyme levels of aspartate aminotransferase (AST), alanine aminotransferase(ALT) and alkaline phosphatase(ALP) by benzo$(alpha)pyrene$ induction were significantly lowered in a dose dependent manner after pretreatment with MEAK. Furthermore, MEAK also decreased the elevated lipid levels after benzo$(alpha)pyrene$ administration. These results revealed that MEAK could afford a significant protective action in the alleviation of benzoBenzo$(alpha)pyrene$ induced hepatocellular injury.