Abstract:Prognostics and health management top architecture on civil aircraft is top architecture and function definition for technology and application of Prognostics and health management system on civil aircraft, including Onboard Prognostics and health management technology architecture, Ground Prognostics and health management technology architecture and Prognostics and health management based airline operations support and related communication architectures, and so on. Prognostics and health management top architecture on civil aircraft is to define the function and performance of each components of Prognostics and health management top Architecture on civil aircraft through the architecture and function definition for technology and application of Prognostics and health management system on civil aircraft. Defining the function and performance of each components of Prognostics and health management top Architecture on civil aircraft; The research can regulate and guide the research on Prognostics and health management technology of civil aircraft, and also has great significance in Prognostics and health management project on other military aviation.