以黔东苗语为语料,对黔东苗语差比句的结构类型进行了详尽的描述和划分,包括对各类差比结构的句法形式和特征、语义特点、语用情况等进行分析。通过这些分析,结合功能语法语义理论和比较范畴理论,初步建立起黔东苗语的差比范畴,并确立范畴内的核心和非核心成员。 This paper uses Qiandong Miao as the corpus to describe and divide the structure types of Miao dialect in eastern Guizhou province in detail, including the syntactic forms and features, semantic features and pragmatics of various types of difference structures. Through these analyzes, combined with functional grammatical semantic theory and comparative category theory, the differences between Miao and Miao languages ​​in eastern Guizhou Province are preliminarily established and the core and non-core members in the category are established.