Carp, Cypinus carpio, has been esteemed as one of the most tasty fresh water fishes in Korea. But little study on its food has been reported. The composition of fatty acids, amino acids, nucleotides and their related compounds as chemical component of carp muscle were analyzed by gas-liauid chromatography, amino acid autoanalyzer and high speed liauid chromatography. The fatty acids of the carp muscle lipid consisted of the large amount of $C_{18}\;:\;2,$ $C_{18}\;:\;1,$ $C_{18}\;:\;3,$ $C_{16}\;:\;0,$ $C_{16}\;:\;1,$ acids, small amount of $C_{16}\;:\;2,$ $C_{18}\;:\;0,$ $C_{18}\;:\;4,$ $C_{14}\;:\;0,$ $C_{14}\;:\;1,$ $C_{12}\;:\;0,$ acids, and $C_{13}\;:\;1,$ $C_{13}\;:\;0,$ $C_{20}\;:\;1,$ $C_{17}\;:\;0,$ $C_{15}\;:\;1,$ $C_{17}\;:\;1,$ $C_{22}\;:\;1$ acids were smaller. In fresh carp, the results showed that inosine $17.25{\mu}mole/g$, hypoxanthine $10.06{\mu}mole/g$ were dominant and the content of GMP, IMP, AMP, UMP, CMP were 1.56, 1.36, 0.92, 0.49, $0.34\:{\mu}mole/g$ on dry base, respectively. Histidine and lysine were dominant amino acids in carp extract, having 49.4% (214.6mg%), 33.9% (147.1mg%) of total free amino acid contents, respectively, but the content of glycine, serine, alanine and glutamic acid were low, and arginine, aspartic acid, threonine, proline, valine, methionine, isoleucine, phenylalanine were detected in trace amount. The content of amino acid composition showed that glutamic acid, aspartic acid, lysine, leucine, alanine, valine and arginine were the most abundant amino acids, while such amino acids as glycine, isoleucine, phenylalanine, threonine, histidine, methionine, serine and tyrosine were low, and proline was detected in trace amount.