Based on the enterprise data warehouse, the introduction of a big data-supported data lake, combined with advanced technologies such as multi-dimensional data modeling Cube, statistical analysis, and AI prediction, can enable the unified management of messy structured and unstructured data in enterprises. This will help eliminate data silos and chimney effects, reuse enterprise information capabilities, generate the due value of data, and become a driver for reducing costs and improving efficiency. It truly realizes the digital transformation of enterprises.