Abstract: Aiming at the present situation that multi-source geospatial vector data is multi-source and difficult to integrated and comprehensive utilization, multi-source geospatial vector data association technology is proposed, and a association visual and computational query system of multi-source geospatial vector data is constructed based on the technology. Firstly, the concept and classification of multi-source geospatial vector data association is defined. And then the construction technology of association relation which includes adaptive quadtree coding technology, scanning line technology, geometric matching and semantic matching technology is introduction on the basis of the concept and classification.Finally, to display association relation visually, prototype system is designed. The proposition of association technology can build association relation amang multi-source geospatial vector data, the establishment of prototype system offers a platform for users to use multi-source geospatial vector data integrated, and it has improved the utilization ratio of data and the effectiveness of searching.

Key words: multi-source spatial vector data, association relation, adaptive quadtree coding, scanning line, geometric matching, semantic matching