The mediumrange forecasts calculated by the T369, ECMWF and Japan (JP) models are verified. The results show that all of the three models could well predict the variation and adjustment of the atmospheric circulation over middle and high latitudes in Eurasia, and among them the ECMWF model performs the best, which has a good performance in predicting activity of western Pacific subtropical high. All the three models perform well in predicting the transition of temperature at 850 hPa, but they tend to overestimated the temperature over the north and south of China. For southern China, three models have smaller biases in temperature prediction than for northern China, and the ECMWF model has better performance than T639 and Japan model. As far as the sandstorm precess seen in 27-29 March, the ECMWF model is more effective than Japan and T639 model in mediumrange forecasting of the surface high pressure system which incurred the sandstorm weather this time.