Abstract: The multi-component maintenance scheduling model is developed, which includes prognostic information, maintenance cost and action. First, the Weibull distribution is used to describe the degradation process. The minor, imperfect and replacement maintenance actions are defined, and the impact on the failure is described. Failure cost, maintenance cost, resource cost and downtime cost are considered. The cost model of one maintenance activity is developed. Then, based on the cost model of each maintenance activity, the multi-stage total cost rate model is proposed. Finally, the effectiveness of the proposed model is verified by a series of computational experiments.