Lu Xun not only the greatest man of letters in the history of modern literature, but is the master of satire and humor. By his humorous, funny and ironic writing styles, Lu Xun satired the corruption of Chinese feudal institution and its ideological culture, and also revealed deeply the misdeed of imperialism and the darkness of KuoMintang rule. Mark Twain is one of American critical realists at the end of 19th century. He is famous for its American distinction, especially for humor and satire. Mark Twain, the mirror of America, revealed various kinds of crimes of capitalist society and criticized the expansion of imperialism. Lu Xun and Mark Twain share the distinctive humorous and satirical style. In spite of their differences in nationality and chronical environment, Lu Xun and Mark Twain have a lot of similarities. Due to their different cultural backgrounds, Lu Xun and Mark Twain yet have apparent differences in humor and satire. Lu Xun not only the greatest man of letters in the history of modern literature, but is the master of satire and humor. By his humorous, funny and ironic writing styles, Lu Xun satired the corruption of Chinese feudal institution and its ideological culture, and also revealed deeply the misdeed of imperialism and the darkness of KuoMintang rule. Mark Twain is one of American critical realists at the end of 19th century. He is famous for its American distinction, especially for humor and satire. Mark Twain, the mirror of America , revealed various kinds of crimes of capitalist society and criticized the expansion of imperialism. Lu Xun and Mark Twain share the distinctive humorous and satirical style. In spite of their differences in nationality and chronical environment, Lu Xun and Mark Twain have a lot of similarities Due to their different cultural backgrounds, Lu Xun and Mark Twain have apparently differences in humor and satire.