Abstract:In order to predicate and evaluate the threat of water flood suffered by the mines in the study area, setting Youjiang bureau of mines in Baise coalfield as an example, on the basis of analyzing hydrogeological characteristics of the study area, eight main controlling factors which will influence floorwater bursting have been determined. By using AHP method, advantages in dealing with uncertain factors or subjective information, taking advantages of powerful function on the spatial information processing and analysis of GIS, the vulnerabilities of coal water bursting have been evaluated in the study area.