Abstract: The basic geological databases of Northeast China involves regional geological map spatial database, mineral site database, working progress database, geochemical database and so on. Further construction and maintenance will ensure these databases to be up-to-date and in stable operation. The innovation of data management methods and means will improve the management and maintenance level. The basic data will provide support for the integration and secondary development of the public-welfare geological data, and service for the informatization and socialization of geological survey.