A new airborne AgI flame seeding generator in Cheyenne ⅢA was used in the project of the Beijing field experiment in 2004. It is one of the most important field experiments in the national key research project “the demonstration of precipitation enhancement techniques”. The seeding data was recorded while the Beijing field experiment from April to September. These data are analyzed, and the technique how to record the seeding data with the new airborne AgI flame seeding generator in Cheyenne ⅢA is discussed.