本文提出了试验规范的可靠度概念,利用正态分布随机变量的容许限统计方法,得到了制定冲击试验规范的统计公式,而且从非中心t——分布算得了单边置信上限的因子k值表,根据置信度和可靠度在这表中查得k值。因此冲击试验规范的制定变成了环境子样均值、标准偏差的计算和k值的选取。最后有一个利用这个方法的例子。 In this paper, the reliability concept of the test specification is proposed. Using the statistical method of tolerance limits for normally distributed random variables, a statistical formula for formulating impact test specifications is obtained. From the noncentral t-distribution, the factor k of the unilateral upper confidence limit is calculated. In the table, k values ​​are found in this table based on confidence and reliability. Therefore, the formulation of the impact test became the calculation of the mean and standard deviation of the environmental subsamples and the selection of the k value. Finally there is an example of using this method.