With the transformation of airborne software system to flexible and open service-oriented architecture, how to guarantee service quality has become the focus of service governance. The Quality of Service (QoS) is innovatively applied to airborne software services to ensure the continuous and reliable operation of service clusters. Comprehensively considering the value of characterizing the QoS of airborne software under actual conditions and combining with the critical mission OODA combat elements, the QoS indicator system of airborne software service is designed with corresponding QoS strategies for each indicator. On this basis, the airborne software service QoS system model is proposed to achieve multi-level and multi-faceted quality assurance of airborne software service system capabilities. By constructing different service failure scenarios, it is verified that the proposed airborne software QoS system model can objectively measure the real-time operation status of airborne software services, and ensure the stable and reliable operation of airborne software services through strategy implementation, thereby effectively improving service quality, ensuring efficient completion of tasks and achieving high availability of airborne software service architecture.