人们的言语交际可以打破常规语序 ,使用非常规语序即倒装句。这是众所周知的事实。那么 ,人们在交际过程中为何不遵循通常的信息分配原则 ?这是否与人们的认知心理有关 ?他们使用倒装语序的理据何在 ?本文从认知的角度对倒装句的认知理据及语用功能进行了分析和探讨 ,指出 :倒装句的使用是基于人们对现实世界的认知 ,是对现实世界的隐喻化映照 ;人们使用倒装句是使对现实世界的描述条理化、层次化、清晰化 ,从而达到叙事连贯 ,承前启后 ,突出主题 ,抒发情感的语用目的。 People’s verbal communication can break the conventional order of words, using unconventional order that flip the sentence. This is a well-known fact. So why do people not follow the usual principle of information distribution in the process of communication? Is this related to people’s cognitive psychology? What is the rationale for their use of the inverted order? In this paper, from the cognitive perspective, Pragmatic functions are analyzed and discussed. It is pointed out that the use of flip-flops is based on people’s cognition of the real world and the metaphorical reflection of the real world. People use flip-flops to stratify the description of the real world, Level, clear, so as to achieve narrative continuity, bearing in mind the past, highlighting the theme, the purpose of expressing emotion.