Big Data. The emergence of e-commerce has subverted the traditional retail model, and the emergence of big data will subvert the traditional e-commerce mode of operation. The application of big data runs through the entire process of commodity trading, from commodity selection to purchase, from logistics and distribution to after-sale feedback, there is the shadow of big data at all times. Through the analysis of big data, e-commerce enterprises really do "know yourself and know your enemy, and never be in danger", according to the needs of consumers, from all aspects of perfect products and services. Undoubtedly, big data has become the core driving force of e-commerce operations.