Abstract: According to the observational data from 1955 to 2002 at 80 stations in Gansu Province, 64 examples of stronger sand-dust storm occurring in the province are analyzed. Their climate, weather circumstances, influential system, influential range, the cold air source, cloudy features, and conception diagnosis are studied. The climate characteristics, the weather patterns and the moving tracks of sandstorm in Gansu Province are summarized. The short-term forecasting methods of sand-dust storm are built, and the short-term forecasting conception model is given. Applying the computer language and model design method, the sand-dust storm monitoring and forecasting platform is successfully built to achieve the practical need of sand-dust storm monitoring and forecasting.