Compressed air ejection has the advantages of suitable for general use,fast ejection speed,no thermal protection,safety,reusable,environmental and low cost,which is widely used in aerospace,ships and war-ships,land-based weapon system,etc.A large number of literatures are classified and summarized,and the compressed air ejection application research fields are viewed briefly.The key technologies and development prospects of compressed air ejection in various application fields are analyzed briefly.It concluds that the development of an efficient and miniaturized compressed air ejection system is an inevitable trend in all fields,and the research results provide effective references for the application and research of compressed air ejection in future.