Based on the model output data, the synoptic verification of the mediumrange forecasting (larger than 72 h leading time）for T639, ECMWF and Japan operational models during the autumn of 2011 is conducted. The results show that the three models all have good performance on predicting the evolution of largescale circulation, such as zonal index and subtropical high. As a whole, the forecasting ability of ECMWF is the best among all models. Meanwhile, all the three models have good performance on forecasting of temperature at 850 hPa, especially over southern China. With respect to forecasting of typhoon Nesat, all the forecasted tracks lie east of the initial position, and its center pressure is larger than that of initial field. Although the forecasting stability is not so good, the forecast standard errors of ECMWF and Japan models are still comparatively small.