由于对近代汉语音韵资料了解尚不够全面,学界多认为桓欢(-on)类韵从元代的《中原音韵》以后在北方方言中多已消失,而是基本上保存在南方方言中。文章广泛勾稽近代汉语音韵史料,确认近代汉语北方方言保留桓欢类韵实际上相当普遍,此前学界的有关认识并不确切。桓欢类韵在北方方言的消变轨迹也尚需进一步研究。 As the understanding of modern Chinese phonological data is not yet comprehensive enough, many scholars believe that Huan Huan (-on) rhyme from the Yuan Dynasty’s “Central Plains rhyme” after more than disappeared in the northern dialects, but basically preserved in the southern dialect. The essay extensively examines the historical materials of modern Chinese phonology and confirms that the preservation of Huan Huan rhyme in the northern dialects of modern Chinese is actually quite common. Previously, the relevant understanding of the academic circles was not definite. Huan Huan rhyme in the northern dialects of the trajectory of change still needs further study.