Exploration geochemistry"is developing from a mineral prospecting technique to a young branch of applied earth science. It is expected that this young science would make extraordinary contributions to solving important resources and environmental problems during the 21th century. This point of view hasn' t even been fully acknowledged by a large number of exploration geochemists themselves.The scope of application of exploration geochemistry will be widened so drastically in the coming decades that the title of "applied geochemistry" will be more suitable for harmonizing its development.Applied geochistry as a branch of geosciences, is just taking shape. It is a multi disciplinary activity by chemists, geochemists, mathematicians, physists, geologists, agronomists, environmentalists etc. There is a scientific journal which bears the same name, but the results of study in this field have been widely scattered in different journals. No scientific society with this title has been organized. So there is a great chance for the Association of Exploration Geochemists to change its name to the Association of Applied Geochemisty, in order to attract a large number of multidisciplinary oriented scientists toward the same end of making greater contributions in solving important resources and environmental problems. The idea of geochemical mapping as the basic support for the development of applied geochemistry will help the multidisciplinary scientists to broaden their horizon from problems very local to problems with regional or even global overviews.