The purpose of this paper is to realize the auto division for functional area of intensive use meanwhile the efficiency and accuracy was improved. Method employed is that functional area of evaluation of intensive use was divided based on Delaunay triangulation and GIS. The results indicate according to comparison between results divided by expert and improved method that :( 1) The 26 functional areas divided by expert were totally covered by the method for auto division based on Delaunay triangulation and GIS. (2) There were 8 functional areas that coincided with the method for auto division, account for 30.77%. (3) The other 18 functional areas belongs to part coincidence, account for 69.23%.