Taobao's shopping forecast of "thousands of people" belongs to the customer insight and prediction of business value of big data. Through big data analysis, Taobao can deeply understand customers' consumption behaviors and preferences, thus predicting customers' possible consumption behaviors in the future. This predictive ability can help Taobao achieve more efficient customer mining and target customer management, thereby improving sales and user experience. Through the analysis and mining of a large number of data, Taobao can accurately push personalized goods and services, meet customer needs, enhance the shopping experience, and thus achieve better commercial benefits. The business value of this kind of customer insight and prediction is one of the important applications of big data in the field of e-commerce.