对着发射击高射武器系统毁伤概率的计算公式提出了一种新算法 ,称为二项展开优化法 .它是在原有的常用算法二项展开法基础上改进得到的 .新算法保留了二项展开法实施容易、计算快的特点 ,又在一定程度上克服了原算法由于计算组合数 Ck N而带来的计算机计算过程中的舍入误差 .最后 ,文章又用实例比较了几种算法在计算毁伤概率值的精度与差异 . A new algorithm is proposed for the calculation formula of the damage probability of a projectile-fired weapon system, which is called the binomial expansion optimization method, which is improved based on the original common binocular expansion method. The new algorithm holds two items Expansion method is easy to implement and fast computing, and to a certain extent, overcomes the rounding error of the original computer algorithm due to the calculation of the number of combinations Ck N. Finally, the article compares several algorithms Calculate the accuracy and difference of damage probability value.