Abstract: To explore the optimal level of dietary lipid for Takifugu rubripes juvenile, the juvenile with weight of（7.71±0.15）g were divided into 6 groups,each group containing 60 fish and the six groups were fed with six different levels of dietary lipid（5.77%, 7.71%, 8.93%, 11.89%, 13.75% and 16.42%） for a period of 56 days. The results show that the body weight gain and special growth rate decreased significantly in the group of 16.42%, while increased in the groups of 5.77%, 7.71%, 8.93%,11.89% and 13.75%（P<0.05）. Before the lipid level of 13.75%,the feed conversion ratio decreased with the lipid level increase, then there were no differences. Hepato index and viscera index increased significantly（P<0.05）. The CF showed highest in the group of 8.93%,but there were no obvious differences among groups. The levels of moisture, ash and crude protein decreased significantly with the level of the dietary lipid increasing, but the level of crude lipid increased significantly（P<0.05）. The highest GLU appeared at the group of 8.93%. Levels of ALT, CHOL and TG increased significantly with the dietary lipid increasing（P<0.05）. It suggests that the proper ratio of dietary lipid on the growth and metabolism of Takifugu rubripes was 8.93%.

Key words: lipid level, Takifugu rubripes, growth, body composition, blood parameter