Trans-Pacific Partnership acts as one instrument to cope with the East Asian Cooperation process for the United States now.While，the future of TPP is gloomy because it is faced with several impediments including limited future yields，technical disputes and so on.Considering the role of the United States as one of the most important final consumption market for the East Asia’s exports，it is less likely to exclude the United States from the East Asian Cooperation process from a longer perspective.Finally，the influence of the United States in East Asia needs to be recognized appropriately.In addition，timely decision and policy-making should be conducted on the basis of China’s interest.