本文主要围绕系统功能语法中的词汇范畴理论来展开讨论。在词汇范畴理论中有两个概念:“搭配”和“集”,被称作两种词汇范畴,用来解释句子是否正确。搭配像结构一样,说明组合关系,而集与类和系统一样,说明聚合关系。本文在对这两种词汇范畴分析的基础上提出了自己的一些观点和看法。 This article mainly discusses the vocabulary category theory in the system functional grammar. There are two concepts in lexical category theory: “collocation” and “set”, which are called two kinds of vocabulary categories and are used to explain whether sentences are correct or not. Like with the structure of the same, indicating the combination of relations, and set the same with the class and system, indicating the polymerization relationship. Based on the analysis of these two categories of vocabulary, this article puts forward some of my own views and opinions.