功能语法突破传统语法的限制,对语法研究采用从形式到意义和从功能到形式相结合的描写方式。它的研究对象是语法单位、语法范畴及其与词汇、上下文和语言系统不同层面的单位相互作用的功能规则。本文采用功能语法的研究方法探讨了汉语数范畴,证实了汉语数范畴的存在及其语法意义、语法形式和特点。 Functional grammar breaks through the limitation of traditional grammar, adopts the description of grammar from form to meaning and from function to form. Its object of study is grammatical units, grammatical categories, and functional rules that interact with units at different levels of vocabulary, context, and linguistic systems. In this paper, we use the method of functional grammar to explore the number categories of Chinese, and prove the existence of Chinese number categories and their grammatical meaning, grammatical form and features.