在中文运算中，对汉语数词的语法分析是一个重要环节。本文研究设计了一个中文语法分析器，由主控分析器、知识库、管理器、错误信息表组成，设计步骤如下，根据汉语数词的ＢＮＦ文法，推导出句法图，将句法图在分析程序运行之前送入主程序中，分析程序根据句法图的结构对汉语数词进行语法检查，若有错，给出错误信息，否则，进行下一步处理。 In Chinese operations, grammatical analysis of Chinese nouns is an important part. In this paper, a Chinese grammar analyzer is designed and researched. It consists of a master analyzer, a knowledge base, a manager and an error information table. The design steps are as follows. According to the BNF grammar of Chinese numerals, a syntactic graph is derived, Before running into the main program, the analysis program syntax check the Chinese numerals according to the structure of the syntax diagram, if wrong, give an error message, otherwise, proceed to the next step.