塞林格曾经从认知主义观点出发研究中介语,其中,可变性是中介语的本质属性之一。二语习得方面的语言变异研究具有重要的意义,它一方面通过比较动态的过程展示语言的变异性,另一方面也透过表面的变异更深刻地揭示语言的系统性。本文主要结合原型范畴、词汇变异、心理因素等认知层面浅析中介语变异。 Salinger has studied interlanguage from the cognitive point of view, in which variability is one of the essential attributes of interlanguage. Second language acquisition linguistic variation research is of great significance, on the one hand through a more dynamic process shows the language of variability, on the other hand also through the surface of the variation of the language reveals a more profound system. This article mainly analyzes the interlanguage variation with the cognitive category of prototype category, vocabulary variation and psychological factors.