惯用语是一种具有固定的结构形式和完整意义的固定词组,可以将其按不同的标准分类:音节的标准、结构上的标准等等。从结构形式上,偏正式的惯用语主要可以分为状中关系和定中关系。从语义表达上,偏正式惯用语在语境中表意时带有语义的比喻、借代或引申。本文通过对偏正式惯用语的语义结构、句法成分、语义特征进行举例、归纳分析,采用了文献分析法等研究方法,为惯用语的研究提供一定的参考。Idioms are fixed word combinations with a fixed structure and complete meaning that can be categorized according to different standards, such as syllable count or structural criteria. From a structural perspective, prepositional idioms can be mainly divided into state-of-affairs relationships and attribute-of-subject relationships. In terms of semantic expression, prepositional idiomatic idioms convey meaning metaphorically, metonymically, or by implication in the context of use. This paper provides a reference for the study of East Asian idioms by analyzing their semantic structures, syntactic components, and semantic features through examples and categorization, using methods such as document analysis.