“His Hsiang Chi” (“The West Chamber”)was one of the most popular plays in China under the imperial regime. The Version more well-known was written by Wang Shih Fu in the thirteenth Century, However, the origin of this history is from Yuan Cher’s “The Legend of Ying Ying” in T’ang Dynasty. In “The Legend of Ying Ying” Ch’ang Chun Jui, chief character in this story was a wnomanizer. The main transformation of this story is due to Don Sie Yui’s “The West Chamber”. Then “The West Chamber” written by Wang Shih Fu, was based on Don’s versio’n, is the story which we’re all familiar with. During this process of transformation, Ch’ang Chun Jui was the role with the image the most variable: a womanizer has been replaced by a faithful lover. And this change turned a tragic ending into a melodrama. The theme was no longer a simple love story instead it reveals the resistance against the convention of the old world and the quest of srlf. In this paper, the transformation of the main character Ch’ang Chun Jui and the meeting of this transformation with be carefully studied. By examineing “The Legend of Ying Ying”, “The West Chamber by Don”, “The West Chamber by Wang” and “The West Chamber by Zien”, we can realize why gains its popularity.