[Purpose/significance] This paper aims to analyze the development trend of the basic theory of library science.[Method/process] By analyzing the scientific development of library science theory since the reform and opening up, this paper discusses the trend of the four aspects of library science theory research in the future period.[Result/conclusion] These four aspects include:expanding the scope of library science research, exploring new disciplines of knowledge growth point, promoting the integration of theory and technology, and adjusting the theoretical way of thinking.