本文分析了第二语言习得(SLA)认知视角下的多媒体外语教学。文章首先讨论了SLA的认知机制,并提出隐性和显性的概念;其次,分析多媒体外语教学如何从语言环境、认知环境、自主学习环境三个层面为学习者的L2习得提供认知基础;最后,笔者指出多媒体教学中存在的问题以及提出相应的建议。 This article analyzes the second language acquisition (SLA) cognitive perspective of multimedia foreign language teaching. Firstly, the article discusses the cognitive mechanism of SLA and puts forward the concept of recessive and explicit. Secondly, it analyzes how multimedia foreign language teaching can provide learners L2 learning from the three aspects of language environment, cognitive environment and autonomous learning environment Finally, I pointed out the problems in multimedia teaching and put forward corresponding suggestions.