Foie gras,caviar and truffe are known as the top three of life's greatest delicacies called by the Westerners. The main components of foie gras,such as unsaturated fatty acid,linoleic acid,lecithin,play an important role in softening blood vessels,reducing blood lipid and preventing cardiovascular and cerebrovascular diseases. In this paper,the process involving hepatic steatosis and the molecular protective mechanism of foie gras formation are briefly reviewed. We aim at summarizing the theoretical progress on the molecular breeding of foie gras traits,and providing valuab...