Syntactic analysis is an important part in natural language processing ( NLP ). This paper mainly discusses the syntactic analysis methods used in NLP, such as context-free grammars, transformational grammar, parsing, transition network, augmented transition network etc. 语法分析是自然语言处理中的关键环节,本文就自然语言处理中应用到的上下文无关语法、转换语法、剖析、转换网络和扩充转换网络等语法分析方法进行了论述。