The theoretical basis of library science is the development foundation of library science. Since the"Hangzhou Conference"in 1984,all the previous national seminars on fundamental theories of library sciencehave discussed the theoretical basis related to library science,which was listed as one of the four sub themes in theseventh seminar held at Xiangtan University in 2017. At present,the theoretical basis of Chinese library sciencemaintains a diversified development trend in the fields of connotation,orientation and function. The scholars ex-plore actively the important issues of the theoretical basis of library science from the perspective of philosophy,in-formation and knowledge,culture,society,management and synthesis respectively,such as scientific philoso-phy,Marx philosophy,library philosophy and information philosophy;resource cognition,information manage-ment and knowledge management;macroscopic culture,public culture,traditional culture,information cultureand humanistic culture;sociology,communication theory,intermediary theory and system theory;managementscience,public management and humanistic management;multiple theory,hierarchy theory,macroscopic sci-ence and so on.