Abstract: Based on the daily maximum wind speed and the extreme wind speed data of eastern Hexi Corridor in Gansu from 1980 to 2014, the mathematical regression method was used to construct a long sequence of wind speed data, and then with double conditional constraint indicators, the authors defined the mild, moderate, severe and heavy grade range. The results showed that the north central region had the most serious wind disaster to facility agriculture between April and May, the disaster intensity and concentration degree were almost synchronous. In annual variation, the mild disaster had multi-fluctuation, moderate and serious disasters were significantly decreasing, heavy disasters occurred sometimes. Overall, the north region had particularly severe wind disasters, the wind disaster composite index increased in the order of Liangzhou, Gulang, Tianzhu, Minqin, Yongchang and Wushaoling. Because Liangzhou and Gulang had the smallest wind disaster composite index, they could be the primary choice of facility agriculture development in the region, Tianzhu County should adjust measures to local conditions in facility agriculture, Minqin should choose good wind resistance sunlight greenhouse, and Yongchang was not suitable for the promotion of facility agriculture. The results of the research could provide a reference for wind disaster forecasting and scientific layout of regional facility agriculture, and fill the gaps of regional disaster assessment system.