Abstract: The components of fatty acids in Wenchang chicken were analyzed by gas chromatogrphy-mass spectrometry technology(GC-MS),and the relative content of each fatty acid were calculated. 16 kinds of fatty acids were seperated from Wenchang chicken.Among them,7 kinds of fatty acids,including lauric anid,myristic acid,pentadecanoic acid,palmitic acid,margaric,stearic acid and eicosanoic,were saturated fatty acids.The content of those 7 fatty acids were .75%,1.23%,0.43%,23.86%, 2.04%, 11.18%,0.13%,accounts for 39.63% of the total fatty acid.9 kinds of fatty acids,including 11-teteadecenoic acid,9-hexadecenoic acid,9-vaccenic acid,9,12-octadecadienoic acid,6,9,12-octadecatrienoic acid,11-eicosenoic acid,10,13-eicosenoic,7,10,13-eicosatriennoic and 5,8,11,14-arachidonic acid,were unsaturated fatty acids.The contens of 9 kinds of fatty acids were 0.15%，1.79%，25.84%，21.99%，0. 48%，0.32%，0.45%，0.61%，8.75%，accounts for 60.37% of the total fatty acid. The polyunsaturates fatty acids accounted for 32.29% of the total fatty acids and the essential fatty acids accounted for 31.23%.The results provided the basis for analysis on fatty acid acid component and evaluation on the nutritive value.

Key words: Wenchang chicken; fatty acids; GC-MS