Abstract: This article introduces the rule architecture of key technology in the linkage updating of fundamental geographic information, describes the layer mapping, geometry correspondence, map synthesis, feature selection and spatial relationship coordination, et al, which can realize accurate extraction of change information. Research on constraint rules based on incremental element editing and automatic annotation are also carried out, and does the cross scale based geographic information linkage updating test with 1:10 000 DLG data linkage updating of 1:50 000 DLG data as an example.

Key words: cross-scale, fundamental geographic information, linkage updating, rule architecture