d-chain amino acid/aromatic amino Р acids ratio which indicated health care effect was high. The essential amino acid score was relatively high Р while the component was not in balance, the percentages of essential amino acids and delicious amino acids Р were relatively lower. The content of crude fatty was moderate, the DHA, C20:4(n-6) and EPA which are good Р for reducing blood lipid and inhibiting thrombosis were significantly higher in M. ensis than other species of Р shrimp, index of atherogenicity and index of thrombogenicity were relatively low and the fatty acid evaluation Р was high. Р Keywords:wild Metapenaeus ensis; different sizes; muscle; nutritional components Р