Abstract: To study the nutritional effects of diets adding taurine (0 , 400 , 800 , 1 200 , 1 600 mg/ kg , respectively) on growth performance and digestive enzyme activities of carp, four hundred and fifty carps with about 121g body weight were used. Carps were randomly divided into treatments which contained 3 replicates and 30 carps for each replicate. The basal diet which was added 0 mg taurine per kilogram was used as control group, and the experiment lasted for 56 days. The results showed that growth performance of carps were remarkably increased than control group. At 800mg/ kg level , biology synthesis evaluate(BSE) got the maximum and feed coefficient (FC) got minimum ( P< 0.05) ; In the adding level of taurine at 800～1200mg/ kg , activities of protease, lipase and amylase in hepatopancreas and intestine of carps were remarkably enhanced ( P< 0.05) . According to above results, the optimum dietary taurine level to caps was 800mg/ kg.