Guo Yiqun, female, graduated from the Department of Library and Information Science of Peking University, and is the deputy research librarian of the Information Reference Department of Tsinghua University. 65438-0983 started working in Tsinghua University Library. The main research directions are reference service, user education, subject service and digital resource construction. Member of library society of china User Service and Research Professional Committee. He has undertaken 2 scientific research projects of the National Social Science Fund and the Ministry of Education, published 28 papers and published 7 books as chief editors. The network courseware "Functions and Applications of Modern Library" won the third prize of the National Multimedia Education Software Competition of the Ministry of Education in 2000. In 2006, he won the first prize (the second winner) of Tsinghua University Teaching Achievement.