Abstract: The Data Base for Administrative Units of the People's Republic of China has stored standard codes and coordinates of more than 2300 counties. It is divided into four data files, that is, arc records, coordinates data, polygon records and chaining from arcs to polygons, and it includes more than 30 routines, which are used for the establishment and management of the data base, as well as for statistical analysis and for making thematic maps. This data base is based on minior microcomputer and suitabe for statistical analysis and mapping within the whole country, province or region. In the last two years it has been used in various statistical mapping such as population mapping, etc, and the efficiency is much better than by using traditional method.This paper describes the aims, functions and utilizations for designing the data bank, its content, data capture method, data organization, and its application