Abstract: In recent years, Internet has become one of the most important factors affecting international trade. In order to promote the transformation and upgrading of China’s export, it is of great significance to conduct an in-depth analysis of the marginal effect of export growth under the conditions of internet endogenous trade, which could help us find the new growth point of export. Through the extension of the basic framework of Melitz’s model (2003) and endogenizing the impact of Internet on the trade, this paper tries to discuss the impact of Internet on the ternary margins of export growth. Then it takes the date of China’s 21 main export areas from 2005 to 2015 as the samples to conduct a variable inspection of the results from theoretical model. The findings show that Internet could increase the range of China’s export growth and quantity margin, while at the same time, decrease the price margin; and its impact on the range of export growth is even significant. Therefore, we should pay enough attention to the problem of how to strengthen the construction of China’s enterprise networks, especially the construction of the networks of foreign companies, and how to enhance China’s export growth in the manner of quick turnover and wide sale by taking the advantages of the convenient conditions created by the Internet network.

Key words: internet endogenous trade; URL linked data; growth marginal effect