本文根据实际复杂工程结构独立随机变量多，计算工作量大的特点，提出了用广义随机变量替代一般的独立随机变量以减少基本随机变量的数目，用响应曲面法替代敏度法或摄动法以提高计算效率。算例证明，以上措施取得了良好的效果，有助于非线性随机有限元法在实际工程结构可靠性分析中的应用。 In this paper, according to the characteristics of large number of independent random variables in the actual complex engineering structure and large workload, a general random variable is used instead of the general independent random variable to reduce the number of basic random variables. The response surface method is used to replace the sensitivity or perturbation method. To improve computing efficiency. The example shows that the above measures have achieved good results and help the application of nonlinear stochastic finite element method in the reliability analysis of actual engineering structures.