This trial was conducted to study the effects of dietary energy levels on performance and fat deposition of Yangzhou goslings from 6 to 10 weeks of age. Two hundred 35-day-old Yangzhou goslings with similar body weight were divided into 4 groups with 5 replicates in each group, and each replicate had 10 goslings with half female and half male. Diets of group Ⅰ～Ⅳ with different energy levels (10.11, 11.19, 12.37 and 13.45 MJ/kg) were fed for 35 d. The results were as follows: 1) average daily feed intake of goslings in group Ⅱ was significantly higher than that in group Ⅳ (P<0.05), and the feed/gain of goslings in group Ⅲ and Ⅳ were significantly lower than that in groupⅠ and Ⅱ (P<0.05); 2) dressing percentage and leg fat percentage of goslings in group Ⅳ were significantly higher than those in groupⅠ(P<0.05), and percentages of abdominal fat in group Ⅲ and Ⅳ were significantly higher than those in groupⅠ(P<0.01); 3) No significant differences were found in serum total cholesterol, alanine aminotransferase, aspartate aminotransferase, uric acid, glucose, alkaline phosphatase and lactate dehydrogenase among 4 groups during the feeding trial (P>0.05), and high density lipoprotein and low density lipoprotein of goslings in group Ⅲ were significantly higher than those in group Ⅱ, however, triglyceride and very low density lipoprotein of goslings in serum were significantly lower than those in group Ⅱ(P<0.05), and serum total protein and albumin of goslings in group Ⅲ were significantly lower than those in groupⅠ(P<0.05). In conclusion, the high-energy diet could improve the dressing percentage, abdominal fat percentage and leg fat percentage, and reduce the average daily feed intake and feed/gain. However, the high percentage of abdominal fat (5.4%) would result in the increase of feed cost. It was suggested that the optimal energy requirement was 12.37 MJ/kg, which could provide a scientific basis for the most appropriate feeding of Yangzhou goslings from 6 to 10 weeks of age. ［Chinese Journal of Animal Nutrition, ２００9，２1（5）:659-664］