Abstract: Big data, as a result of new generation of information technology, is an application-driven service field, with unlimited potential. In the environment of big data, the information construction of National Basic Geological Database should focus on the information service value, with the thought of big data, to explore the big data mining and visualization technology, promote the information value, and achieve the maximum value of data. In this paper, a technology scheme for the integration of National Basic Geological Database is proposed on the basis of metadata, database and data warehouse technologies.