《世说新语》是在中国文化史上占有重要地位的一部著作。但其书名多而杂,哪一个是原书名,学界并无定论。通过史书及其它相关资料考证,刘义庆著作时的原书名当为《世说》,《世说新书》和《世说新语》皆为后起。通过《世说》与“说”体文二者之间的关系分析,文章解释了刘义庆以“世说”名书的合理性。此外,通过与刘向《世说》相比较,揭示了刘向《世说》即刘义庆《世说》之书名、体例和旨趣的历史渊源。 “Shi Shuo Xin Yu” is an important book occupying an important position in the history of Chinese culture. However, many of its titles and miscellaneous, which is the original title, the academic community is not conclusive. Through history books and other related materials research, Liu Yiqing’s original book title as “Shi Shuo”, “Shi Shuo Xin Shu” and “Shi Shuo Xin Yu” are all from afar. Through the analysis of the relationship between “Shi Shuo” and “Shuo Shuo”, the article explains the rationality of Liu Yiqing ’s “Shi Shuo”. In addition, compared with Liu Xiang’s “Shi Shuo”, it reveals the historical origins of Liu Xiang’s “Shi Shuo”, namely, the title, style and purpose of Liu Yiqing’s “Shi Shuo”.