The mediumrange forecasting performances of T639, ECMWF and Japan models from September to November 2014 are verified and compared. The results show that the three models all have good performances in predicting the variation and adjustment of atmospheric circulation over Asian middle and high latitude areas and the transition of temperature at 850 hPa, but all of them have systemic errors increasing with forecasting time length. Both T639 and EC have biases in temperature forecast for the northern part of China. The forecast of ECMWF model is higher than initial field, but T639 model is exactly the opposite. For the sea level pressure forecasting, EC model has better performance than the other two models.