The aerial ammunition support in Air Force stations involves many factors and links which influence and condition each other so that the quantitative efficiency evaluation of this type of systems is generally implemented by computer simulation. In this article, the structure of supporting force, process and characteristics of aerial ammunition support in some Air Force station are analyzed. The aerial ammunition support is abstracted as a discrete-event system and aerial ammunition support task models, aerial ammunition models, support resources models, support process models and a discrete-event simulation system are developed. The application shows that the models run correctly and reliably, and can supply a powerful analysis tool for efficiency evaluation of aerial ammunition support in Air Force stations.