中文摘要：

随着新新贸易理论的提出以及发展，基于异质性生产率角度研究企业出口越来越受到重视。本文基于异质性企业贸易模型的基本分析框架，并且引入企业产品质量差异来重新研究生产率与企业出口之间的相互关系，这样可以解释备受关注的中国出口企业所可能存在的“生产率悖论”问题。研究认为，国外市场对出口企业产品质量相对较高的要求会使得出口企业的生产率要高于非出口企业，但是仅仅使用产出总量而忽视产品质量所计算的生产率却未必得到出口企业生产率要高于非出口企业的结论，即可能存在“生产率悖论”。应用中国制造业企业2005—2008年样本检验出口企业是否存在“生产率悖论”，发现中国制造业中大部分行业存在“生产率悖论”。

英文摘要：

Following the new trade theory presented and developed, research on the enterprises export based on heterogeneity productivity gets more and more attention. Product quality difference is introduced in this paper to research the relationship between productivity and enterprises export again, based on trade model analysis framework of the heterogeneity enterprise, then the closely watched ＂productivity paradox＂ existing in exporting enterprise in China can be explained. The study suggests that the foreign market＇ s relatively high requirement on the product quality of export firms will make the productivity of export firms higher than that of non - export firms, but calculating productivity by using total output and ignoring the product quality may not get the conclusion that the productivity of export finns is higher than that of non - export firms, so there may be ＂ productivity paradox＂. Finally, whether ＂productivity paradox＂ exists in the exporting enterprise is tested by using sample of manufacturing enterprises in China from 2005 to 2008. It is concluded that ＂productivity paradox＂ exists in the most of manufacturing industries.