Two surface gale events happened in April 17-19 and May 12-14 of 2001 over Liaoning Province are simulated using MM5 model, and the results are compared with wind observation data at 13 sites (meteorological stations and wind farms). The main experiment results are as follows. The model has good quality in simulating the evolution and distribution characters of regional wind fields. The variation trends of wind speed in every hour are nearly the observations, but there are certain differences in values. When instantaneous (average) wind speed is more than 10.0m·s^-1(9.0m·s^-1), the simulation values are lower obviously than the observational data. The preliminary experiments show that MM5 model has better ability to simulate patterns of regional wind fields and local variation characters in every hour, but the intensity of heavy wind speed is decreased.