欧阳炯的生平经历,使他的词作用韵较全面地反映了五代时期的语音特色。通过比较欧阳炯词作用韵规律与北宋初年的《广韵》韵部情况,管窥两个时代语音变化的一些现象:五代时期的一些复韵母到了宋初有单韵母化、后化的趋势;鼻音韵母方面五代时期不若宋初区分得那样分明;入声韵母部分因本文所引材料较少,只可初步推断是由五代到宋初期间发生了主要元音唇形圆展的变化。 Ouyang Jiong’s life experiences make his rhyme of words more comprehensively reflect the phonetic features of the Five Dynasties. By comparing the rhyme law of Ouyangjiao Ci with the rhyme divisions of “Guangyun” in the early Northern Song Dynasty, we can see some phenomena of phonetic changes in the two periods: some complex vowels in the Five Dynasties tend to be mono-vocalized and later transformed in the early Song Dynasty; Nasal vowels in the Five Dynasties period is not as clear as the distinction between the early Song; vocal consonant part due to the material cited in this article less, but can be initially inferred that from the Five Dynasties to early Song Dynasty occurred during the main vowel lip round exhibition of change.