Mark Twain is a realistic writer in America.His humor,irony and together with colloquial speech have been remembered by readers,for which he became one of America's most beloved humorists and storytellers.This paper focuses on one of Twain's short stories The Stolen White Elephant.Through the analysis of Twain's humor and irony shown from the two main characters in this specific story,this paper is to show the social reality reflected in The Stolen White Elephant.