摘要：本文在修正的A-J模型基础上分析了外商直接投资（FDI）对内资企业技术创新的影响，认为外资企业技术溢出并不意味着内资企业创新能力的提升。内资企业技术创新能力提升有“门槛效应”，通过技术积累越过门槛，外资企业的技术溢出才可促进内资企业技术创新。文章对1999-2006年我国工业企业行业数据进行实证分析后认为：当行业总体、高、中技术行业未达到门槛值时，外资企业对内资企业技术创新的促进作用并不显著；但在低技术行业中这种促进作用却是显著的。最后，文章针对导致上述结论的可能原因及进一步研究方向进行了说明。

Abstract: The effect of Foreign Direct Investment(FDI) in China on the domestic-funded enterprise’ innovation is analyzed with the revised A-J model. No evidence shows that the technology spillover from FDI definitely leads to the innovative ability improvement of the domestic-funded enterprise before it reaches the threshold. Once over the threshold， with the spillover increasing， the innovative ability of the domestic-funded enterprise improves. With the industry data of China from 1999 to 2006， it is found that the innovation promotion effect from FDI on the domestic-funded enterprises in high-tech and middle-tech industries is not significant. But in the low-tech industry the effect is obvious. Finally， some explanations on the threshold and suggestions on the policy are given.