Using DEA and Malmquist index method,the paper calculated the production efficiency of large-scale pig breeding in 29 provinces,municipalities and autonomous regions of China from 2009 to 2013.It also studied the trend of the production efficiency of large scale pig farms by using the beta convergence method. The study noticed a trend of increase in total factor productivity of large-scale pig farms in China during the whole sample and found that the average annual growth rate is 0.5 percent and that technological progress is the main driving force for the growth of total factor productivity.The results also suggested a narrowing trend in the total factor productivity of large scale pig farms and a convergence of both absolute beta and conditional beta.%运用DEA和Malmquist指数方法，测算2009—2013年中国29个省（直辖市、自治区）大规模生猪养殖生产效率，利用β收敛方法探究大规模生猪养殖生产效率的变动趋势。研究发现：整个样本期间中国大规模生猪养殖的全要素生产率表现出增长的趋势，年均增长率为0．5％，技术进步是全要素生产率增长的主要动力。随着时间的推移，中国大规模生猪养殖全要素生产率呈现出缩小的趋势，存在着绝对β收敛和条件β收敛。
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