一词多义在任何一种语言的词汇中都是极为普遍的现象。多义词的词义扩展并不是任意、毫无则的,而有其内在的密切关系和规律可循。笔者基于认知语言学的原型理论,对多义词“云”的语义结构做了分析和讨论,以期客观、系统地解释其中心意义产生、各义项生成的过程。 Polysemy is an extremely common phenomenon in any language. Polysemous word expansion is not arbitrary, there is no rule, but with its inherent close relations and laws to follow. Based on the prototype theory of cognitive linguistics, the author analyzes and discusses the semantic structure of polysemy “Yun ” in order to objectively and systematically explain the process of generating its central meaning and generating various meanings.