Two major forms of biliary atresia, the embryonic and perinatal type, are considered to have different pathogeneses and distinct prognoses. Embryonic biliary atresia is associated with worse prognosis. We report a case of embryonic biliary atresia in a preterm male infant of 31 weeks of gestation and weighing 1375 g, with the initial manifestation of intermittent acholic stool 5 days after birth. Kasai portoenterostomy was per-formed at the age of 51 days when he weighed 2164 g. Nevertheless, poorly restored bile flow and progressive cholestasis led to early liver transplantation at the age of 8 months. Liver function had recovered to normal levels by the age of 12 months. Diagnosis of biliary atresia in preterm infants is difficult and requires a high index of suspicion and careful workup. This case illustrates the poor outcome of embryonic biliary atresia and that early liver transplantation may be necessary to improve the prognosis.