Abstract: 【Objective】 Under the background of rural revitalization, this paper analyzed the efficiency of smallscale pig breeding in different areas in order to provide policy recommendations for the development of small-scale pig breeding industry in China. 【Method】 Based on the input, output and environmental data of small-scale pig production in 25 provinces (municipalities/autonomous regions) of China in 2016, the production efficiency of each region was estimated by three-stage DEA model.【Result】 The results showed that the production efficiency of small-scale pig breeding in China was underestimated before environmental factors and statistical noise were eliminated. The regional economic development level has no obvious impact on the production efficiency of small-scale pig breeding. The increase of regional openness and government’s support for agriculture can significantly reduce the investment redundancy of small-scale pig breeding. 【Conclusion】 The improvement of the development environment of pig industry is conducive to improving the production efficiency of small-scale pig breeding. The government’s support can effectively improve the production efficiency of small-scale pigs. The pertinence of agricultural support should be strengthened in all regions.