Based on the of domestic and foreign scholars' researches, foreign trade growth has a booming effect on economic development, otherwise, the role of cross-border electronic commerce developing in international trade business and economic still has not been proved by the actual data available. This essay selects quarterly data of foreign trade and cross-border electronic commerce in Fujian Province who has the advantages of foreign trade, to makeup the VEC model and research the relationship between the growth of foreign trade and cross-border e-commerce, the results show that: there is the long-term interactive relationship between foreign trade growth and cross-border electronic commerce. Cross-border electronic commerce in Fujian province is only starting, needing more positive and long-term policies to promote.