中文摘要：

研究目的：以征地补偿政策为切入点,选取并构建土地征收的社会成本和社会收益指标,测度土地征收的社会效率。研究方法：问卷调查法,数据包络分析方法（DEA）,比较分析方法。研究结果：根据超效率DEA方法测度得到的结果说明2011年开始执行的264号文的土地征收社会效率最高,达到2.457,1996—2000年阶段的土地征收社会效率最低,为1.006。研究结论：1996年以来,南京市不同征地补偿政策的社会效率整体呈现不断提高的趋势,一定程度上说明征地补偿政策调整符合社会发展和被征地农民的利益诉求。

英文摘要：

The purpose of the paper is to select and establish the social cost index and benefit index for measuring the social efficiency of land expropriation, which is based on the compensation policies of land expropriation. Methods including Questionnaire Survey, Data Envelopment Analysis（DEA）model, and Comparative Analysis are employed. Results show that the social efficiency of land expropriation turns out to be 1, which is measured by DEA model. Its highest value is 2.457of NO.264 document （implemented in 2011 ）, and its lowest value is 1.006 （implemented between 1996 and 2000） measured by the result of super-efficiency DEA model. The social efficiency about different compensation policies of landexpropriation in Nanjing have increased gradually since 1996. To a certain extent, it indicates that the compensation policy adjustment on land expropriation conforms to the needs of social development and the land-lost peasants＇ interests.