Based on 50 years' meteorological data from 56 meteorological stations in Qinghai Province from 1961 to 2010, the spatial distribution, basic climate characteristics and occurence days of dry hot wind are analyzed. The results show that the Qaidam Basin is the main region for dry hot wind over Qinghai Plateau where Xiaozaohuo and Xunhua are the stations that frequently see the dry hot wind followed by Haidong Area. In the past 50 years, the number of dry hot wind days and its intensity have showed a rising trend. During 2001-2010, the annual average dry hot wind events were 29 times, and respectively 17 times and 11 times more than in 1960s and 1970s. In recent years, the dry hot wind days increased, which result from the obvious increase of average maximum temperature and the gradual decrease of the relative humidity.