With the establishment of 9210 system,the dissemination of medium range NWP (T106) adopts the following ways:surface telecommunication system and satellite telecommunication system.Because the surface telecommunication system is limited by the capacity of transmission,NMC takes three kinds of method in order to meet the station needs at all levels according to their receiving ability. On the other hand,because the satellite telecommunication system has unified equipment and graphic software,it only needs one kind of transmission method,and the message quantity is much larger than that of the surface telecommunication system.