This work describes the method of regional geographic information system and constructive data base on county level

including air remote sensing information

maps

ground truth investigation and statistical data. The data base is an information intergration of geographic features

social and economical elements

nature specifications and locations. The work explains the data base design

mathematical models and data organization method

In addition

it also gives some examples of inquiry

searching

digital terraining model

contour plotting

3-dimension grapl and bar chart. In conjection with practical applications

a method library has been established.