本文从五个方面进行论述。一、余嘉锡先生自幼嗜学,早年有“湖南才子”之称。其学问始于目录学,而学术之渊博,也实得力于目录学,自谓:“余之略知学问门径,实受《提要》之赐。”先生治学既重于考据,又兼顾义理;既重于史实,又不拘泥于古。他在博览群书的前提之下,能够学有所思,将实践中得出的规律性结论从理论上加以系统阐述。其研究领域广博,著述宏富,不仅是一位著名的目录学家,也是一位古典文献学家、历史学家和语言学家。二、余嘉锡将目录学研究置于整个文化史的长河中,在全面总结前人的目录学研究成果的基础上,探究其与学术史的种种联系。他不仅吸取了章学诚“辨章学术,考镜源流”这一古典目录学思想中的精华,并且发展和完善了这一优良传统,从而形成了以“目 This article discusses from five aspects. First, Yu Jiaxi childhood psychology, early years, “Hunan wit” said. The academic began with bibliography, and academic profound, but also effective in bibliography, self-proclaimed: “I slightly know the path of knowledge, thanks to the” summary. “” Theology is not only emphasized on the test, but also take into account the principle of justice; Both emphasis on historical facts, do not rigidly adhere to the ancient. Under the prerequisite of reading books, he can think hard and systematically elaborate the regular conclusion drawn in practice. His research interests include extensive research and extensive writing, not only as a famous bibliographer but also as a classical philologist, historian and linguist. Second, Yu Jiaxi placed bibliographic research on the whole history of cultural history. On the basis of a comprehensive review of the achievements of predecessors’ bibliography, Yu Jiaxi explored various links with academic history. He not only learned the essence of Zhang Xuecheng’s classical ideology of bibliography and learning from mirror and source, but also developed and perfected this fine tradition,