Recently，the United States emphasized global rebalance many times.This brought several challenges to East Asian countries’ export-oriented economic growth model.The US has very close economic relationships with East Asian countries.But the US is currently trying to shift its economic growth strategy from consumption-driven to export-driven and trying to stimulate its sustainable economic recovery by increasing export.And the weaker dollar policy has become an important strategy to boost US export.Under this new circumstance，East Asian countries now face two major challenges：one is the currency appreciation，which is weakening the price advantage of East Asian countries’ export commodities；another one is the US trade protectionism.In the mid-to long-term，there are two potential challenges：first，the US reduces demand and import which will undermine the driving force of East Asian countries economic growth；second，East Asian countries look for other export markets which can substitute the US market，and it will lead more severe export competition.