The experiments were conducted to investigate the effect of ice fresh trash fish , formulated feed and mixed feed (30 % ice fresh trash fish + 70 % formulated feed) on the nutrient components of Chinese soft2shelled turtle Trionyx sinensis. Raised for five months , six turtles per group (about 600g , male) were selected to check nutrient components. The results showed that no significant differences were found between them in percentage of dissected fat , content of crude protein and fatty acids ( P > 0. 05) in muscle and soft apron. However , crude lipid , total amino acids and flavor amino acids in the muscle of turtle fed by ice fresh trash fish were significantly higher than those of others ( P < 0. 01) . There was highly relativity between the content of total amino acids , essential amino acids , flavor amino acids in muscle and soft apron of turtle and the content of them in feed (r1= 0. 7843 , r2 =0.9062 , P < 0. 01) . The results showed that there were some effects of feed on the flavor and nutritional value of turtle.