Abstract: Frozen insect technology is an ideal physical killing method. This paper statistical analyses the status of ancient books pests in library of Yichun University and temperature changes inside the freezer during insecticidal freezing, discusses the issues about methods and procedures of insecticidal techniques of cryopreservation, and provides the reference for the future development of uniform standards frozen insecticidal technique.

Key words: insecticidal freezing; ancient books protection; pest control