Analysis of the performance of T42 LAFS and ECMWF NWP models and efficiency of their products.suggests that the 500hPa pattern prodictions of all kinds of the models are successful.The informations can be refered to the medium-range and short-range forecasting decision. The wind predictions of T42 and LAFS model are of higher quality. The prediction quality of the other physical parameters should be made better and improved in the future.