将可靠性设计理论与灵敏度分析方法相结合，讨论了车辆常用弹簧的可靠性灵敏度设计问题，提出了可靠性灵敏度设计的计算方法，给出了可靠性灵敏度的变化规律，研究了设计参数的改变对车辆常用弹簧可靠性的影响，为车辆常用弹簧的可靠性设计提供了理论依据。

Based on the reliability design theory and sensitivity analysis method, the reliability sensitivity of the familiar spring for vehicles is extensively discussed and a numerical method for reliability sensitivity design is presented. The variation regularities of reliability sensitivity are obtained and the effects of design parameters on reliability of the familiar spring for vehicles are studied. The method presented in this paper provides the theoretic basis for the reliability design of the vehicle familiar spring.