The configuration optimizing of repairable spare parts for mission-oriented of repairable spare parts is that under the given circumstances of training or combat missions, the quantity demanded of spare parts are computed to gain most optimized quantity of carried spare parts according to the demands of forecasting maintenance support system. Aiming at repairable spare parts, the models of optimization for amount of carried spare parts for mission-oriented related to the single-phase mission and multi-phases mission were established respectively. And carried quantity of optimized spare parts was computed with the models.