The synoptic and climatic features of southwest strong wind in Liaoning province was analyzed with daily data in recent 10 years. The synoptic dynamic method was applied to research weather systems which cause southwest strong wind and some important physical predictors were found to be used in wind forecast. One prediction method was develpoed on the basis of T106L19 output products and was used in operational forecast. The results show that the forecast effect of the method is much better than that of subjective forecast.