Abstract: This paper construction index of technical content from the perspective of value-added trade and consider the influence of imported intermediate products. The data of 59 countries from OECD input-output tables are used to estimate the contribution of domestic technical content in export products of different types of industries, including national, manufacturing, three categories of manufacture industries according to factor endowments--labor-intensive industry, capital-intensive industry, technology-intensive industry--and 16 sub-sectors of manufacturing. The research result shows that the total domestic technical content of China’s export products occupies an absolute advantage in the world, but the domestic technology contribution of manufacturing industry is inversely proportional to factor endowment. Labor-intensive industry still plays an important role in manufacturing. The development of capital-intensive industry is limited by the constraints of natural resource. The export share and the gross domestic technical content of technology-intensive industry is the largest, but excessive foreign production enters technology-intensive industry through intermediate goods trade, lead to the fact that domestic technical content is low in manufacturing of China.

Key words:  , global value chain；technical content；value-added trade；technological sophistication of export