讨论了螺旋管簧的可靠性优化设计问题。在基本随机变量的概率特性已知的情况下，采用二阶矩法和可靠性优化设计方法对螺旋管簧进行了可靠性优化设计，通过计算机程序可以直接实现螺旋管簧的可靠性优化设计，迅速准确地得到螺旋管簧的可靠性优化设计信息。

Techniques from the second moment method and reliability optimization design method are employed to present the practical and effective method for the reliability optimization design for coil tube-spring on the condition of known probabilistic characteristics of basic random variables. The respective program can be used to obtain the reliability optimization design information of coil tube-spring accurately and quickly.