On February 27th, 2005, the cataloging department of Tsinghua University Library 15 people braved the cold wind in the middle of winter and came to Beiyou Library to have a one-day business exchange and discussion with the catalogers of our library. At the meeting, the teacher of Beihou Library demonstrated the formation process and standardized control of bibliographic records, and introduced the cataloging process after standardized control, the problems faced by standardized control of bibliographies and the solutions of Beihou Library. We had in-depth discussions and exchanges on some very specific business issues, such as how to obtain the author number, the classification of biographies, and the use of the form of International Times. In addition, we also invited the teachers of Beiyou Library who participated in the digital library to introduce the situation of metadata indexing digital documents. Through this exchange seminar, the catalogers of the two libraries spoke freely and exchanged experiences with each other, which benefited a lot. Everyone hopes to hold more such exchange meetings in the future to promote the development of cataloging work.