Chapter II of China's foreign trade relations and economic growth empirical analysis This section mainly from the perspective of econometric analysis to examine China's foreign trade of China's economic growth contributed to the level of 1980-2008 by the Chinese customs import and export statistics in order to total factor productivity as a measure of economic growth of China's foreign trade and economic growth of the relationship between the empirical The empirical results show that China's foreign trade, especially high-tech products import and export trade of China's economic growth is I Introduction of Total Factor Productivity Total factor productivity is a reflection of the effect of the economic development of the integrated input and output indicators, which rule out the possibility of capital and labor on the role of economic growth, technological innovation is a measure of the contribution to economic growth an important Table 2 China's import and export volume of hi-tech products in total import and export volume in the proportion of units: 100 million US dollars%