Abstract: Sex-linked dwarf gene （dw gene） of chicken can reduce feecl consumption when it is dominant and promote growth when it is recessive. In order to evaluate the hybrid effect of yellow-feathered broiler with dw gene, the hybrid experiment was carried out in this study. The A line yellow-feathered broilers were chosen as male parent, two-line hybrid yellow-feathered broilers with dw gene of DYJ were chosen as female parent and the CON were served as the control group. Three hundred ADYJ chicks and three hundred CON chicks with the same age were raised to 7 weeks under the same feeding condition and management before slaughter. During the breeding period, the weight and feed conversion ratio for both of the groups were recorded every week. In order to evaluate the economic benefit of hybrid effect of yellow-feathered broilers with dw gene, the body weight of all the experimental chickens were determined after 7 weeks, meanwhile, 15 male and 15 female chickens were randomly selected from each of the groups and their slaughter performance were determined. The results showed that while the 7 weeks average weight of the ADYJ group （1 690.4 g） was higher than that of CON group （ 1 623.3 g）, no significant difference was observed between them. The 7 weeks feed conversion ratio of ADYJ group was 2.26 and was lower than that of CON group （2.31）. The breast muscle ratio of rooster and hen of ADYJ group were 23.4% and 24.2% respectively and both of them were significantly higher than those of CON group respectively （P〈0.01）. The semi-eviscerated weights of rooster and hen of ADYJ group were 77.6% and 77.0% respectively and both of them were significantly higher than those of CON group respectively （P〈0.05）. The slaughter rate of rooster and hen of ADYJ group were 87.4% and 87.6% respectively and both of them were significantly higher than those of CON group respectively（P〈0.05 ）. No significant differences were observed between the percentage of abdominal fat and leg muscle rate of rooster and hen of the two groups respectively. The economic cost accounting results showed that the culturing cost for each chick of ADYJ group was 9.65 Yuan and was 0.33 Yuan less than that of the CON group. It was indicated that yellow-feathered broilers hybrid with dw gene could significantly increase the production efficiency.