Fasciola hepatica is a parasite of cattle, sheep and other herbivorous mammals and lives in the bile ducts and occasionally liver parenchyma. Fasioliasis is characterized by hyperplasia or proliferation of the biliary epithelium, dilatation of biliary passages, leukocyte infiltration and periductal fibrosis. Man is thought to be infected incidentally. Numerous cases of hepatic fasioliasis have been reported in the medical litherature. In Korea, about 10 cases of human infection has been recorded in the literature. We report a case of biliary fascioliasis diagnosed by percutaneous cholangioscopy.