摘要：Lying is a kind of pragmatic *** the perspective of the definition of a lie,a lie is a kind of speech act that deliberately conceals the facts or provides self-deemed false information to achieve the purpose of *** film Catch Me If You Can tells a story of an FBI agent chasing a talented young *** are a variety of lies in the film,therefore this paper takes the lies in the movie as the main research *** on relevance theory,politeness principle,face theory in pragmatics,this paper analyzes the pragmatic features of lies from a pragmatic perspective,including gradability,subjectivity and *** the communicative view,context view and relevance in the relevance theory can explain the subjectivity and flexibility of lies.