In order to realize the intellectualization and visualization of disaster emergency, the research on intelligent reasoning of emergency preparedness relate to the spatial information has become a hotspot at present. A geographical case reasoning (GCR) model of integrating case-based reasoning (CBR) and rule-based reasoning(RBR) based on geography information system (GIS) was designed in this paper, and geographic index method, similarity method, case index and match method were established. Finally, the model was applied in the disasters emergency intelligent system of a pipeline company, and the case study showed that GCR model was feasible.