Research On The Reasons For The Trade Surplus Of China

China's trade surplus has continued to increase for three decades since China's reform and opening up policy in 1978.In 2009 China's annual trade surplus achieved 196.07 billion dollars, trade surplus between China and U.S. accounted for 73% of China's total trade surplus, China is being encountered the trouble of the huge trade surplus, in the context of the global financial crisis, trade protectionism appeared, on the background of the financial crisis ,China's trade surplus, especially trade surplus between China and U.S. , brings more and more pressure. Most people of domestic and foreign scholars think that China's comparative advantages is the main cause of China's huge trade surplus, but Yifu Lin does not think so, he pointed out that the implementation of China's comparative advantage strategy is not the cause of the main trade surplus, but other main trading partner countries not according to their comparative advantages.This text will research on the reasons for the formation of China's trade surplus based on the factor endowments perspective of the comparative advantage, and uses HOV model and the classical Leontief input-output method to carry on empirical research on China's import and export trade. Finally, based on sorting the proportion of import and export structure and ratio of labor to capital in various products sectors respectively, carry on comparative study.This paper can reach to the following conclusions: (1) our country is to follow the principle of comparative advantage to trade with others after the using of the classical Leontief input-output method and the empirical testing of specific products sector through relevant research.(2) During the sorting and comparative study on the proportion of import and export structure and ratio of labor to capital in various products sectors ,we found that in China's foreign trade, trade products of the products sectors,whose proportion of both import and export structure ranked first, are"large quantities"products, and China is in the intermediate links of the value chain, in the production of low added value products.Finally, the text summarizes the shortcomings of the research, and proposes the ideas and proposals of the future in-depth study. Noted that future research can be focused on China's factor endowments classification and stock ,especially the bringing of human capital in the factor endowment classification is an important new research direction in the future.