以元伦理学理论为基础,从“应该”、“善”等价值词的意义入手,首先分析了翻译研究中“忠实”命题的性质、意义和功能,然后沿着元伦理学价值推理的逻辑,对“忠实”命题的有效性问题进行了剖析,最后根据翻译活动的主体间性特点,结合元伦理学家黑尔提出的可普遍化原则,论证了“忠实”命题的合理性,指出了其合理性的根据。 Based on the meta-ethics theory, starting with the meaning of value words such as “should ” and “good ”, we first analyze the nature, meaning and function of “faithful ” proposition in translation studies. The logic of ethical reasoning, and the validity of the “loyal” proposition are analyzed. Finally, based on the intersubjectivity of translation activities and the universal principle proposed by the meta-ethicist Hale, Loyalty "proposition ’s rationality, pointed out its reasonable basis.