| In recent years, trade in services plays an increasingly important role in international trade. As the trade liberalization goes deeper, China is becoming more and more deeply involved in the international division of labor. While expanding its trade in goods, China’s trade in services is also showing unprecedented development--continuously meeting the people’s daily demand, providing the service means of production and connecting logistics, information flow and cash flow all over the world. Trade in services has become an integral part of China’s trade.However, China’s service trade deficit exists for a long time and export of service is given priority to traditional low technical services, high technical services still fall behind, which indicates that the structure of trade in services has not been effectively improved. This kind of structure implies that "quality" and "quantity" of China’s trade in services are mismatched:while binary marginal in trade in services has been expanding, China is locked in low-end structure distribution in the export of trade in services and fails to realize the connotative growth. If this is not improved, it is likely that China would enter into "comparative advantage trap". Getting rid of low-end export structure, enhancing the technological level of export of China’s trade in services and promoting trade in services to high-end structure are the urgent realistic goals of China’s trade in services.To achieve the above goals, we need to have a clear understanding of technological level of export of China’s trade in services, the technical structure of export and its changing path. At the same time, we need to start from the appearance, to dig deeper and find the internal factors and mechanism, which influence the promotion of technological level of export and the upgrading of structure transformation.On the basis of existing methodology, this paper builds a brand-new measure and analysis system of indexes in which sophistication of export of trade in services, technology structure height and technical structure distribution are reasonably calculated. According to the system above, this paper makes a detailed analysis of the state of sophistication of export of trade in services, technology structure and its changes, and reveal that compared to developing countries, the world and developed countries, China remains relatively low technological level of export, especially shows large gap between with developed countries. Then this paper proves that China’s trade in services is still in the low-end transformation path, in which trade in services transitions only from the low technology services to the mid-low ones, and the "pyramid" pattern of technical structure distribution has not been effectively improved. Moreover, this paper constructs a theoretical model, in which it analyzes the equilibrium formation process and internal mechanism. On basis of the model, econometric methods are applied to explore the influence factors of the technological level of the export of trade in services. It finds that China has its particular and different influence factors. Finally, this paper gives specific and workable proposals to improve the technological level, promote the structural transformation and upgrading. |