[目的/意义]以学科内生知识体系生长逻辑及与图书馆事业发展关系应用逻辑为视角，研究图书馆学学 科结构的嬗变逻辑，既能揭示学科发展规律，也能阐释新时代图书馆事业高质量发展与图书馆学一流学科建设关 系逻辑生成过程。[方法/过程]新中国成立后，我国图书馆学学科逻辑演变路径为：受图书馆事业发展应用逻辑主 导的学科建设阶段、遵循学科知识逻辑的图书馆学发展阶段、学科逻辑与应用逻辑同构共生的图书馆学发展阶 段、图书馆学学科建设与图书馆事业发展高质量耦合融合阶段。[结果/结论]新时代图书馆学学科建设与图书馆 事业发展关系重构，必须转变学科建设逻辑哲学，重塑高质量的学科建设与事业发展松散耦合关系，以学科内涵 建设深化服务事业发展的高质量供给，以新时代图书馆事业新使命增强图书馆学学科建设外部适切性，以新技 术、新业态、新环境增强图书馆学学科建设内部适切性。

Discipline construction is not just the foundation, but also the level of the entire li? brary science education.[Method/process] Through nearly a hundred years of development，China’s library science education has achieved remarkable achievement，which not only is influenced by knowledge system，is still influenced by library cause in different stages. Therefore，taking knowledge system and library cause as a view，by studying the law of logical evolution，the aim of this paper is to describe the trends and regularity of a discipline，to explain logical pro? duction process which library cause high-quality development with construction of first-class discipline of library sci? ence achieve coordination.[Result/conclusion] The results show that since the founding of the People's Republic of China，library science has gone through four stages: affected by library cause development by application logic、inde? pendent growth stage of discipline、isomorphic symbiosis by application logic and the discipline logic、loose coupling and coordination. According to the discipline evolution law、characteristic, the article concludes the development path of reconstructing relationships of library science and library cause as follows：change the logic philosophy of discipline construction、reestablish the loose coupling relationship；strengthening connotation construction to improve the efficien? cy of supply；fulfilling the new mission of library cause to improve adaptability of external environment of discipline construction of library science；improving internal adaptability of discipline construction by using new technique 、new environment、new industry.