Abstract: It is difficult for existing systems to organize spatial information according to geographic event and not to provide initiatively the spatial information correlative to event disposal to the users. Users often need to operate multi-source isomerous applied system so as to get the information with fussy course and lower retrieval efficiency. In this paper, we propose an auto retrieval method of geographic event information based on ontology other than traditional geographic information retrieval by using the key to make match and inquire, in which the geographic event is regarded as the tache. Therefore, users only need to know the elementary information of geographic event and can extract intellectually the information associated with geographic event from large spatial information database and provide the individuation support of retrieval. So, the retrieval information can be made by users automatically with simplified course of information access, information organization and applied model of software. And finally, the retrieval efficiency can be enhanced.