Abstract: Using the data of hail during the period from 1980 to 2009,Digital Elevation Models(DEM)data,land types,population density,choosing frequency of hail and standard deviation of height as the assessment factors of hazard and sensibility of disaster-developing background respectively,and taking planting areas and motor vehicle possessing quantity as bearing disaster objects,the model of risk assessment is established and the regionalization of hail disaster in Beijing area is obtained by the method of multiple linear regressions.The results of evaluation indicate that the mid-low risk is the main grade in Beijing. The high risk is mostly in mountainous region and the region of the highest risk is in the north of Yanqing county.The heartland of Beijing belongs to the moderate grade except some high risk region.