Abstract: Based on the hail observation data of 16 stations in southeast Guizhou province from 1961 to 2008,considering to Hail Concentration Degree(HCD) and Hail Concentration Period(PCP),temporal and spatial variation of hail in southeast Guizhou was analyzed by using the methods of Morlet analysis,Mann-Kendall catastorophe test,and linear trend estimate.The result showed that the spatial distribution of HCD and HCP had significant difference in southeast Guizhou,which could be divided into four key regions depanding on the topography.The temporal distribution of HCD and HCP had remarkable periodical variation in every region.Besides,HCP showed delayed trend in Guizhou province except for south and northeast region.

Key words: Southeast Guizhou, Southeast Guizhou, Hail events, Hail concentration degree, Hail concentration period