Based on the practice of digital technology application in ancient agricultural monographs in the China Agricultural University Library,this paper discusses the significance of converting ancient monographs into digital format.

Comparative research of the three series of ancient books in modern t imes;

XU Nai-chang s achievements and characteristics of the compiling and inscibing of series of ancient books;

The air pollution and biological pollution in the stack room for ancient books can do harm to the health of ancient book librarians.

Along with the development of the society,the Chinese ancient books had circulated the variety that the form passed by from the authorities monopolizing,transcribed communication to the printing communication.

Starting from the practice of utilizing the Internet and the ancient books cataloguing,this paper introduces the important resources of the free bibliography of ancient books on Internet,and expounds some methods for using this bibliography.

The paper has discussed the aims and significance of ancient agricultural books digitization in the National Agriculural Library,put forward strategies for ancient agricultural books digitization,and expounded on the digitalization technology during the process of implementation.