Abstract: Geological work has basic, perspective and exploratory meanings for national economic development and construction. Along with the increasing recognition and expanding application of geosciences, the geological work is more and more significant in urban planning and construction. During the building of "Humanistic Beijing, Sci-tech Beijing, Green Beijing" and "Globalized City", Beijing will more rely on the scientific supports from geological work. All kinds of plans and constructions should accord with scientific rules, which will ensure the construction of a world-level city fit for habitation with safe residence, good environment, developed economy and leading technology.