This article is for the problem of geographic data "information isolated island",design and implementation the mechanism of SVG-based GIS data integration; solved the problem relatively close of informarion data exchange in geographic.The principles of data integration technologies have been studied; analysis in to express geographic information with SVG document and how to store SVG document in relational databases,and then correspond the solution.This plan was easy and feasible,guaranteed various systems still moved deferred to the original way,one thing only needed is to transform the local database data to the SVG documents through the conversion interface when exchange the infonnation.