Abstract: The annual variation and monthly changes of hail and its spatial distribution were analyzed in Hohhot city based on the climate data from 1971 to 2009 by six weather stations,with that,the disastrous weather dominated by hail hazard zoning has been conducted using GIS.The results showed that the frequency of hail reduced year by year on Hohhot regions,hailstones were mainly focused on May to September,number of hail days was greater in summer and hail happened occasionally in late spring and early autumn.Danger classes occurred hail had gradually reduced from the south to the north in Hohhot city,the highest of danger classes was in Wuchuan region,Tuo county,Helin and Qingshuihe belonged lower danger classes,other places were medium regions.