The Mechanism Of Import Affect China’s Economic Growths And The Empirical Research Of Marginal Effect

Because of the global economic integration developing, foreign trade is more essential to economic growth. Many scholars were focused on the promotion effect of exports to economic growth, while ignoring the impact of imports. But in fact, as the proportions of import trade volume deepen, import trade should no longer be conclusive for the leakage amount of the national income. Based on the supply point to consider, Imports of the contribution to economic growth is increased imports of factor inputs and high-end intermediate goods.First the article reviews the theory and research status of imports affect economic growth, and then boils them on the basis of imports affect economic growth mechanism. Simply said imports by increasing factor inputs, technological progress, human capital accumulation, institutional innovation and optimize the industrial structure to promote economic growth.The next article will divide import commodities into primary" goods, intermediate goods and consumer goods, and empirical analysis of the impact of the different commodity structure of imports to GDP growth. The results show that the different import commodity structure of economic growth have the different effects. The promotion effect of intermediate goods imports on economic growth is most significantly, confirming the mechanism action of the intermediate goods imports overflow and improve industry productivity through technology to promote economic growth. Raw materials and consumer goods, and economic growth were positively related, its mechanism of action is to promote economic growth through increased factor inputs and import-competing.In addition, we also investigate the marginal effect of the structure of imported goods on the different stages of industrial growth. By analysis of selected the marginal effect of industry data and industry level, writer found that imports of raw materials has increasing marginal effect on resource industries, while imports of intermediate goods has decreasing marginal effect on labor-intensive industries, imports of consumer goods no significant marginal effect on the industry. Therefore, Chinese government should pay attention to the import of raw materials and the management of the resources sector, strengthening technical innovation and improvement of labor-intensive industries.Finally, the author put forward several policy recommendations of China’s economic development:China should optimize the import structure, and actively expand domestic shortage of resources, key parts, imports of advanced technology, while encourage enterprises to conduct independent innovation and moderate expansion of no domestic consumer goods imports.