“蛋果”词是一种富有创意的语言失误。它不同于拼写或误用错误,而是对已有表达的一种替代,而这种替代与原有表达具有语义或语音等方面的联系。文章运用“外延内涵传承说”理论,对于“蛋果”词的形成过程与机制进行研究,并提出外延内涵传承是其形成的基础。 “Egg fruit ” word is a creative language error. It is different from spelling or misuse of errors, but an alternative to existing expressions that have semantic or phonetic links with the original expressions. By using the theory of “inheritance theory of inheritance”, this paper studies the formation process and mechanism of “egg fruit”, and proposes that the extension of its connotation is the foundation of its formation.