Preventive maintenance is an indispensable part of civil aircraft operational support activities, and it is also the basis for ensuring the safe and economic operation of civil aircraft. As the first international general standard for preventive maintenance, S4000P provides preventive maintenance with a reasonable analysis method for the formulation of initial maintenance tasks throughout the life cycle, the analysis of unplanned maintenance tasks, and the optimization of initial maintenance tasks through operating data. To expand the application of S4000P in the field of civil aircraft, this article analyzes the S4000P, interprets the preventive maintenance business process, sorts out the life cycle preventive maintenance activities, and clarifies the business interface between S4000P and the full series of specifications based on the ASD S-series specifications, and the S4000P-based civil aircraft preventive maintenance analysis framework is established to provide strong support for advancing the development and optimization process of civil aircraft preventive maintenance.