Based on a description of the technology of geographic information system (GIS), this paper deals with the Dajinhu geopark tourism information system in the light of resource information collection, information management and information analysis. The result of the information analysis is displayed in an integrated form of figures and sound. In this way, the management of Dajinhu geopark will be more scientific, standardized and reasonable. Meantime, a high standard technology supporting its application for entering the rank of world geoparks is also attained.