纵观80年代中国图书馆学理论研究的发展轨迹,不难看出它有两次转向:第一次是由经验描述转向理性反思,或叫由实用图书馆学转向理念图书馆学;第二次是由理性反思转向发展战略研究。本文旨在探讨这两次转向的功过得失,总结其经验教训,为90年代中国图书馆学研究提供一些有益的东 Looking back on the development of theoretical research on Chinese library science in the 1980s, it is not difficult to see that it has turned twice: the first is from empirical description to rational reflection or from practical library science to philosophy library science; the second It is from rational reflection to development strategy research. The purpose of this paper is to explore the merits and demerits of the two shifts and to sum up their experiences and lessons so as to provide some useful suggestions for the study of Chinese library science in the 1990s