针对目前装备保障方案优选决策出的方案并不一定是最科学的情况,同时考虑到保障方案中存在小样本数据和数据不确定的因素,提出基于灰色理论和效费比的装备保障方案优选方法,方法着重强调了效费比在决策评判中作用,以免遗漏科学符合工程实践的保障方案.案例分析表明,方法值得在工程实践中借鉴. In view of the fact that the optimal decision of equipment support plan is not the most scientific one, taking into account the small sample data and the uncertain data in the guarantee project, a method of optimizing equipment support plan based on gray theory and cost-effectiveness ratio , The method emphasizes the effect of cost-benefit ratio in decision-making judgment so as to avoid omission of the guarantee scheme that science conforms to engineering practice.The case analysis shows that the method is worth learning from engineering practice.