Since the first film in the world was made, the adaptation of literary works became increasingly popular in the screens. Because of the high influence of the original works, this kind of movies can gain positive word-of-mouth and get many awards. However, there are a thousand Hamlets in a thousand people’s eyes. There are different views about such kind of movies. This paper tries to analyze the relationship of the original works and the film arts, analyses the classic adapted works, and then discusses the inevitability, principle, and the advantages and disadvantages of the adaptation of literary works. Finally, the rules of successful literary adaptation are summarized.