东亚区域一体化的主要阻力来自于区域的多样性及其带来的高交易成本,如何克服这一阻力是东亚国家在金融危机后走向区域整合的关键,非正式一体化是东亚化解这一障碍的现实途径。区域生产网络、华人商业网络和次区域经济圈三种非正式一体化方式及其各自的演进降低了东亚整合的交易费用,并使东亚走上正式的一体化合作成为可能。

The main challenge of East Asian integration is high transaction cost due to regional diversity.After Asian financial crisis it is crucial for East Asian countries to overcome the obstacle.Informal integration is very helpful for East Asian integration.The three forms of informal integration,which are regional production network,Chinese business network and sub-regional economic cooperation area,and their development can reduce the transaction cost,making it possible for East Asian integration.