汉藏语系尤其是藏缅语族许多语言里,动词和名词都有用人称代词的语法化形式做词缀,表达一致关系的现象,其中第一人称往往用词缀[a]。文章提出假设,现在保存在许多汉藏语系语言里的亲属称谓名词前面的[a]词头,来源于第一人称代词演化来的人称领属词头。 In many languages, especially the Tibetan-Burmese languages, the verbs and nouns all use the grammaticalization of personal pronouns as affixes to express the phenomenon of consistent relations. The first person often uses the affix [a]. The article proposes the hypothesis that the prefix [a] in front of the kinship terms now held in many Chinese-Tibetan languages ​​derives from the head of the person from which the first person pronoun evolved.