首先分析了疲劳试验结果测量不确定度的主要来源，然后采用不确定度传递律（GUM）评定方法，并结合旋转弯曲疲劳试验结果给出了成组法测定给定应力下疲劳寿命和升降法测定给定疲劳寿命下疲劳强度的测量不确定度的评定过程和结果。结果表明：可采用GUM法对旋转弯曲疲劳试验结果进行测量不确定度评定，成组法和升降法分别是确定疲劳寿命和疲劳强度的主要方法，该文介绍的评定方法对其他类型的疲劳试验结果的测量不确定度评定有一定的参考价值。

The major sources of measurement uncertainty of fatigue testing results were analyzed. By adopting evaluation method of uncertainty transfer law (GUM method) and combined with the results of rotating bending fatigue testing, the measurement uncertainty evaluation procedure and results of fatigue life under given stress determined by group method and fatigue strength under given fatigue life determined by up-and-down method were given. The results show that GUM method can be used to evaluate the measurement uncertainty of the results of rotating bending fatigue testing. The group method and the up-and-down method are main methods to determine the fatigue life and fatigue strength, and the evaluation method introduced in this paper has a certain reference value for evaluation of the measurement uncertainty on other fatigue testing results.