The realtime display system of AMDAR (Aircraft Meteorological Data Relay) data in the Meteorological Center of the China Eastern Civil Aviation Administration is introduced. The construction and working flow of the AMDAR data application systems are presented. The thunderstorm, gale, and snow weather events are analyzed by using the AMDAR data application systems. The results show that the AMDAR data application systems are visualized and practical, and can effectively improve the utilization of the data. The uneven spatialtemporal distribution of AMDAR data is mainly distributed between 00:00UTC and 15:00UTC in the midlow level under 4 km. The system can provide continuous wind and temperature distributions of upperlevels, and also be able to catch up the small and medium scale weather characteristics. In certain weather processes, it can provide useful objective bases for nowcasting and has certain practical value.