戲劇的假扮是李安電影中的特色之一。張愛玲的《色，戒》以戲劇假扮執行誘殺行動為主要的情節，李安透過他的《色│戒》電影影像，呈現其所擅長的戲劇與電影影像之間的表演性。本文企圖先大致爬梳李安電影中戲劇假扮的特色，進而以《色│戒》影片中話劇社的扮演，來回顧劇中所處抗日時期的寫實主義戲劇演出，並從中探討該劇中主要人物王佳芝和易先生的扮演，最後討論李安使用戲劇假扮的影像意圖。

Playacting is one of the most important elements in Ang Lee’s films. This skill is apparently seen in Ang Lee’s Lust, Caution. The main plot in Eileen Chang’s Lust, Caution is a kind of assassinating action with dramatic playacting. The research intends to look back to the dramatic performance by the dramatic club in the film. To go further, the research also explores the playacting of the two main characters: Wang Chia Chih and Mr. I, and it is necessary to discuss Ang Lee’s intention, the playacting of the adapter in the final part.