A technique for the analysis of the meat fatty acid was established,and through the analysis of the content,type and characteristic fragment fingerprint of the fatty acid,the identification method of the pig-derived conponents based on differences of fatty acids were realized.A large number of meat products were determined by gas chromatography(GC),and 35 kinds of fatty acids were identified by retention time and mass spectrometry.The differences of different fatty acids were determined by selecting 18 kinds of the fatty acids which are more stable for statistical analysis.Combined with feature maps,8 kinds of fatty acids were used in the identification of pig-derived conponents in meat.According to this method,it can be determined whether the meat products contain pig-derived conponents.This method is simple,rapid,low cost and high discriminable,and has a certain application prospect in the identification of pork.