东亚因其迅速发展的国际生产网络而得到经济学界的广泛瞩目。本文在整理相关理论和实证文献的基础上,通过对人均收入水平的分析提出了东亚区域内广泛存在技术梯度差异的现实。作者根据Jones等人提出的国际垂直分割理论,建立增广引力模型,在区分零部件贸易和传统贸易的情况下,利用联合国贸易统计面板数据,对东亚垂直分工网络的技术结构进行了细致梳理。结果显示,近年来日本在核心部件上的作用有所下降,而四小龙实现了技术升级,作用得到较大的提升。作为东亚生产共享网络中的重要一极,中国同四小虎之间呈现出较强的互补性而非替代性。 East Asia has drawn the attention of economists due to its rapidly growing international production network. On the basis of sorting out the relevant theoretical and empirical literature, this paper presents the reality of the wide range of technological gradients in East Asia through the analysis of per capita income level. Based on the international vertical segmentation theory put forward by Jones et al., The author establishes an augmented gravitation model to make detailed analysis on the technical structure of East Asia’s vertical division of labor network by using the UN trade statistics panel data to distinguish between parts trade and traditional trade. The results show that in recent years Japan’s role in the core components has declined, while the four little dragons to achieve technological upgrading, the role has been greatly enhanced. As an important pole in East Asia’s production sharing network, China has shown strong complementarity with the four tigers rather than alternative.