中文摘要：

本文旨在关注近几年上市物流公司成本效率的变化趋势和入世对物流业成本效率变化趋势的影响。首先应用NEW-COST—DEA模型对20家上市物流公司2000—2009年间的成本效率做了测算，结果显示20家上市物流企业成本效率普遍较低。10年均值只有54．25％，还有46％的提升空间。接着应用面板卢，盯收敛和PAM模型考察了物流上市公司成本效率的收敛趋势和收敛方向。结果显示20家物流上市公司的成本效率在10年中存在收敛趋势，但收敛趋势反映的不是成本效率水平的普遍提高，却是效率水平的退化。但发现2005年12月物流市场开放促进了成本效率水平向效率前沿的收敛，且向前沿的收敛速度也得到提高。

英文摘要：

The paper studies the trends and changes of cost efficiencies for 17 logistics public companies during 2000- 2009 by NEW-COST-DEA, SUPER-CCR-DEA and SUPER-BCC-DEA models. The result shows that the average cost efficiency is only 54.25%. There is still a long way to go to promote new cost efticiencies. This paper evaluates the recent dynamics of public logistics companies of cost efficiency by means of data envelopment analysis （DEA）. β-convergence ＆ σ-convergence are used to assess the trend and direction at which logistics markets are integrating. We also employ a partial adjustment model to evaluate convergence towards best practice. Results do not seem to provide supporting evidence of convergence of efficiency levels towards an average. Nevertheless, there is evidence of an overall improvement of efficiency levels towards best practice after entering WTO. And advices are given in the end according to the results.