In the field of airborne test technology, the data amount of airborne data bus is increasing rapidly, the data processing method becomes more and more complex, and the requirement for software reusability is getting higher and higher. To meet these requirements, we introduce abstract factory design pattern to the field of aviation bus data processing. Based on the characteristics and application scenarios of this design pattern, we instantiate data bus by types to form a unified interface to users. Then we perform data processing on different bus interfaces. For the interface is only related to the protocol standards and technical characteristics of the bus, and independent of specific signals, it realizes the generalization of data processing method, and avoids processing each interface signal separately. So, it meets the requirements of software reusability and improves the efficiency and reliability of data processing for airborne bus.