This paper studies trends of China’s foreign trade data since the exchange rate reform from 2005.From the RMB exchange rate，export competitiveness，the international market，foreign exchange liquidity situation，we analysis China’s foreign trade data and the problem of the data overrated in 2005-2012.Principle of China’s trade statistics has limitations，to fundamentally solve the trade data overrated caused by the statistical pattern，we need to improve the foreign trade data of China’s statistical system，reform RMB exchange rate mechanism，implement an appropriate monetary policy，punish false trade，and strengthen the capital and financial capital management at the same time.