Agriculture and traditional agriculture products plays a significant role in the livelihoods of smallholder farmers in developing countries, including Vietnam. Cost-benefit Analysis and a mixed methodology were applied to evaluate the economic performance of traditional chicken production in Thua Thien Hue province, Vietnam by region and scale. The data were drawn respectively from 64 sample households in Huong Thuy and Nam Dong district in 2017. The Cost-benefit analysis shows that Huong Thuy tends to have a lower production cost and thus a higher production benefit as compared to those of Nam Dong district. This study also indicates evidence of the importance of veterinary, mortality rate, scale of production and region on the performance of chicken farmer in the province.