Abstract: Ruminant products is one of the main sources of human diet, the fatty acid composition in it is closely related to human health. Research efforts have focused on nutritional management practices in lipids digestion and metabolism to improve production efficiency and the quality of the ruminant products. In the past two years, considerable progress has been made in increasing the understanding of lipid digestion and metabolism in ruminant. In this paper we have referred 126 articles related to ruminant lipid nutrition via PubMed, CNKI and the ADSAASAS annual joint meeting abstracts (2007 and 2008 editions) to make a review of the research progress of ruminant lipids nutrition in 2007 to 2008. The research program consist of kinetics of fatty acid metabolism in digestion tract，regulation of fatty acids metabolism in mammary gland，the effect of fat (fatty acids) supplement diet on ruminant production and fatty acid composition in fat.Effect of rumen rennet fat on production in ruminants and the cooperation effects of fat with other diet additives.

Key words: lipids nutrition; fatty acids; ruminant; metabolism