This study was conducted to evaluate the metabolizable energy of corn gluten feed in Cherry Valley meat ducks, and further to establish the prediction equations for its metabolizable energy value based on chemical composition. Sixty 56-day-old Cherry Valley meal meat ducks with body weight of (3.3±0.3) kg were randomly allotted into 6 groups with 10 replicates per group and 1 duck per replicate, and one group was allocated as the endogenous group. The true metabolizable energy (TME) method was used, meat ducks were force-fed with 2% body weight of corn gluten feed after 48 h of fasting, and all excretion of each duck was collected with bags for 48 h after force-fed. The results showed that the contents of ether extract and crude fiber of chemical composition in corn gluten feed presented a large coefficient of variation. Some samples of spouting corn bran belonged energy feeds, and some belonged to protein feeds according to international feed classification method. The apparent metabolizable energy (AME), nitrogen-corrected apparent metabolizable energy (AMEn), TME, and nitrogen-corrected true metabolizable energy (TMEn) of corn gluten feed were (6.36±1.61) MJ/kg, (6.58±1.57) MJ/kg, (7.84±1.54) MJ/kg and (7.29±1.50) MJ/kg, respectively. The best TMEn prediction equation of corn gluten feed was TMEn=-0.219NDF+16.940 (R²=0.881 4,P=0.001 7). These results suggested that there is a wide change of AME, AMEn, TME and TMEn of spouting corn bran; the determinant coefficient (R²) of prediction equation of TMEn established by chemical compositions of corn gluten feed is larger, it shows that the equation has strong reliability and reference significance.