This paper analyzed the problem of focusing troops in air defence operation by the Lanchester equation with the theory of cost function and the mathematic way.

• 以蓝彻斯特方程为依据,引入代价函数,对防空作战中集中使用兵力进行了数理分析,并得出了最优方案,为防空作战指挥决策提供了理论依据,具有一定的指导和借鉴价值。