Abstract: In order to study the influence of feed emulsifier on growth performance in Ross white feather broiler. 12000 ‘Ross 308’ white feather broilers, with an average weight of (46.5±1.0) g, were randomly allocated into 3 groups, and each group contained 4 replicates. It was divided into 3 stages in the breeding experiment: the stage of 0-14 d, 15-28 d stage and 29-42 d stage. The basal diet for group A was designed according to the Ross broilers nutrition requirements; based on the basal diet, 200 g/t emulsifier was added into diet B for group B; 5 kg of bran meal was used to replace, 5 kg/t mixed oil in diet C for group C, as well as supplemented with 200 g/t emulsifier. The results showed that: the addition of emulsifiers reduced broiler ADFI and improved broiler ADG; the broiler ADFI and ADG had no significant effect by reducing oil and adding emulsifier. Overall, adding emulsifiers, oil 5 kg/t reduction had maintained the ADG and fed to gain ratio of broiler to normal level.