[目的/意义]理论与实践脱节是应用性学科需要面对的一个普遍问题,分析图书馆学理论与实践脱节的历史渊源和制度逻辑,探索理论与实践结合的新路径。[方法/过程]对理论与实践脱节问题进行了学术史回顾,并采用问卷调查法研究同行对专业期刊的感知差异。[结果/结论]民国时期的图书馆学研究强调实践相关性,形成了图书馆学的经验主义传统;改革开放后的图书馆学研究追求科学严谨性,形成了本质主义范式的图书馆学研究。本质主义范式的兴起导致了图书馆学研究理论与实践脱节问题的逐步显现,图书馆学界内部也分化为实践派和学院派两大阵营,不同阵营倚赖不同的期刊。理论与实践脱节的根源在于学术生产的体制化,学术界和实践界形成了各自不同的运行规则。科学严谨性和实践相关性并非完全对立,通过在图书馆学界推广“巴斯德象限”类型的研究可以有效解决理论与实践脱节的问题。 [Purpose / Significance] Disconnection between theory and practice is a common problem that needs to be faced by applied disciplines. It analyzes the historical origin and system logic of the disconnect between theory and practice of library science and explores a new path combining theory with practice. [Methods / Processes] An academic history review of the disconnect between theory and practice was conducted, and a questionnaire survey was conducted to investigate the perceived differences between peers in professional journals. [Results / Conclusion] The study of library science in the Republic of China emphasized practice relevance and formed an empiricist tradition of library science. After the reform and opening up, the study of library science pursued scientific rigor and formed a paradigm of library science . The emergence of the paradigm of essentialism has led to the gradual appearance of the disconnect between the theory and practice of library science. The interior of the library has also been divided into two camps: the practice camp and the academic camp. Different camps rely on different periodicals. The root of the disconnection between theory and practice lies in the institutionalization of academic production, and the different operating rules have been formed in academia and practice. The relevance of scientific rigor and practice is not completely antithetical. The promotion of the “Pasteur quadrant” type of study in the academic community can effectively solve the problem of disjunction between theory and practice.