文章利用Eviews软件，对1994年～2004年的加工贸易进出口数据、价格贸易条件和收入贸易条件数据进行了简单的统计分析，得出的结论是：加工贸易进出口额增长率、竞争力指数、增值系数的变动均会引起价格贸易条件的下降，而进出口额增长率则对收入贸易条件都有促进上升的作用。

This paper briefly surveys the literature of measures of trade openness and points out the main factorsaffected the size of trade openness. Then we estimate the trade intensity in China and adjust it afterseveral selected factors. The conclusion is that the nominal trade intensity in China has been larger thanits theoretical value, especially for 2001 - 2003. Reasons for the deviation of 2001 -2003 are (1) thelag effect of the accession into WTO; (2) the depreciation of USD and (3) other trade policy andindustry policy.

This paper reviews the Continuum of Inputs Model, which we use to analyze the processing trade in China. The conclusion is that most of the FDI in China are engaged in processing trade, and then promotes the industrial structure of China.