文章以土家语北部方言龙山坡脚话表示“五”“借”“鼻子”“耳朵”等意义的词跟藏缅语族亲属语言中的同源词进行比较分析,并对其中的演变过程作了一些推测,认为原始藏缅语中CNV式音节的词,发展到现代土家语龙山坡脚话演变成以o 充当韵母的零声母音节,成为土家语坡脚话韵母o 的一个重要来源。 The article compares and analyzes the words “five”, “borrow”, “nose” and “ear” in the dialect of the northern part of Tujia Minority to the homophones in the language of relatives of the Tibeto-Burman languages ​​and makes an analysis of the evolution process Some speculate that the words of the CNV syllables in the original Tibetan-Burmese language evolve into the footsteps of the modern-day Tujia Longmenpo evolved into the zero-syllable syllables that o serve as the vowels and become an important source of Tujia dialect syllable o.