In the five years from 2005-2010, China's foreign export economy maintained an annual growth rate of about 5%, and the growth rate of foreign trade did not exceed 10% for a long time. With the e-commerce of various industries, the formation and development of major online sales enterprises, from 2011 onwards, the number of cross-border electronic transactions began to increase sharply, only in 2011 that year's turnover reached 1,730 billion U.S. dollars, and by 2012 the world's online sales reached 2,290 billion U.S. dollars, compared with 2011, an increase of nearly 1/3. the data show that in 2013, the volume of China's external trade of cross-border e-commerce companies alone reached $3 trillion, up 25% year-on-year. E-commerce transactions accounted for a relatively small share of total foreign export trade of only about 15%, but compared to 7% in 2011, a year-on-year increase of 100%. Such a situation shows that the e-commerce model has a strong vitality, is in a period of rapid development, according to the National Bureau of Statistics estimates, China's cross-border e-commerce revenue is expected to reach 30% of the total foreign export trade in 2016, which will become a powerful push factor for the enhancement of China's foreign export trade.

2 Cross-border e-commerce operations in the era of big data

The key to survival and development of both e-commerce and Internet companies nowadays lies in the application of data, and all the companies based on interconnected operations in China focus on the preservation and analysis of data, as data can bring new growth momentum in output value. By the end of 2014, the daily transaction amount of Alibaba company can reach 30 million dollars, the number of transactions per day is more than 10,000, and the growth rate of the number of Alibaba's users in the past two years has reached a staggering 700%. Now every year in March in the Alibaba Park held in China Internet Data Conference, the theme of the conference in the past two years are big data for the enterprise different applications of the discussion, Ma said: "will be in the next ten years, in the premise of big data, focus on the basic data, to master more cross-border data materials, residual data or complete data services, in the speed of sale and other cross-border platforms of the company On, there are tens of millions of users from all over the world, hundreds of millions of trading items, Alibaba has a large amount of transaction information, of which the data vertical and horizontal is the most worthy of the platform operation." [2]

Big data refers to a large collection of data that cannot be processed, developed, or managed in a very short period of time with ordinary software or hardware tools. The value of big data is reflected in the following aspects: first, enterprises that provide products or services to a large number of consumers with different consumption habits in various countries around the world can carry out precision marketing; second, small and medium-sized enterprises can utilize big data to carry out service transformation; and third, traditional enterprises can utilize big data to carry out enterprise reform when facing the pressure of upgrading the industrial model.