中文摘要：

利用工业企业大型微观数据,构建计量模型,首次从企业层面实证分析了中间品进口贸易对北京市企业全要素生产率的影响。实证结果表明：中间品进口可以显著促进北京市企业全要素生产率的提升;进口贸易对于出口企业全要素生产率的提升有着明显的促进作用;中间品进口贸易能显著促进轻工业、混合工业企业生产率水平的提升,对重工业企业生产率的影响不显著,不同行业的表现差异很大。因此,北京市政府应该鼓励企业通过进口贸易进行国际资源整合,促进企业转变生产方式、提升生产率。

英文摘要：

In this paper,we use firm level micro data,establish econometric model,and provide empirical evidence on the effect of imported intermediate goods on total factor productivity（ TFP） in Beijing’s firms. Empirical results mainly show three conclusions：（ 1） the import of intermediate goods can significantly promote TFP in Beijing’s firms.（ 2） Import can significantly promote TFP in firms which export goods,intermediate goods which are imported through general trade can significantly promote TFP in Beijing’s firms.Compared with stateowned enterprises and foreign- owned enterprises,import of intermediate goods has greater effect on private enterprises. Promotion of intermediate goods that are imported from low and middle income countries is not significant. Intermediate goods that are imported from high income countries can significantly promote TFP in firms.（ 3） Import of intermediate goods can significantly promote TFP in both light industries and mixed industries,and has no significant effect on TFP in heavy industries. Compared with competitive industry,import of intermediate goods has greater effect on monopoly industries. The results differ greatly among different industries. Accordingly,the government of Beijing should encourage firms to take advantage of import to integrate international resources,improve methods of production,and promote TFP.