Abstract: This article is take hail disaster in Tibetan for example,in the full analysis of Tibet regional climate background and economic environment,using the hail data of 39 meteorological stations in 1981-1981,studing the distribution formation and mechanism of hail in the region. According to the theory of disaster,choose the geomorphology,frequency,population and natural landscape from the disaster by environment,the possibility of disasters and the vulnerability of hazard-affected bodies three aspects. Using the clustering analysis method establish the mathematical model such as meteorological disasters subsequently background,disaster risk and the vulnerability of hazard-affected bodies. Using Ma Info Professional software,get the coverage of the meteorological disasters subsequently background,disaster risk and the vulnerability of hazard-affected bodies through the operation of the attribute database and graph database of various disasters. Repass layer operations such as overlay,merging,and patch hierarchies,finally get all kinds of meteorological disaster risk zoning. Finally under the support of Ma Info Professional software in query function,implementation to show the area of hail disaster risk by clicking on the area. The job has great instructive effect on figure hail proof,provide necessary resources of disaster prevention and mitigation work for the government.