Abstract: The Analysis and Research of Components of Fatty Acid in Deep-Sea Fish Oil and Seal OilAuthor Cao Shulan,Guan Zifeng,Cai Yunping,Ma Mingyang,Cheng Guangrong(Liaoning Provincial Centre of Analysis Test and Research,Shenyang 110015,China)Received 19981223 Abstract Firstly deep-sea fish oil and seal oil were converted to methyl easter,then the components of fatty acid in them were determined by quartz capillary GC/MS. 27 kinds of fatty acids were separated from the deep-sea fish oil and 70.15% of them are unsaturated fatty acids.26 kinds of fatty acids were separated from the seal oil and 85.24% of them are unsaturated fatty acids.The main components of the unsaturated fatty acid of two kinds of oil are hexadecenoic acid,linolenic acid,linoleate acid,oleic acid,eicosapentaenoic acid (EPA),eicosenoic acid,docosahexaenoic acid (DHA),docosapentaenoic acid (DPA) and docosenoic acid.Key Words:deep-sea fish oil ,seal oil,fatty acid,GC/MS