Directed towards to the characters of archives information sharing. That employing effective privacy technique to realize safe sharing of archives information and preventing leakage and illegal access by others had been become an urgent issue to be solved at present on both domestic and international archives community. On the basis of limited access and free access, the article studies two major privacy protection techniques of archives information sharing and analyzes semantic handling ability. Furthermore, it proposes technique strategies of archives information privacy protection. One is consider privacy strategy of information owners as object of research to study and realize the technique of archives information privacy protection that based on strategy; the other is to study detecting and keeping away of information anonymity protection and privacy reasoning attack from the aspect of knowledge and semantic, and further improve traditional anonymity privacy protection methods. At last, to adopt access controlling strategy that based on knowledge and technology and study the privacy protection structure of archives information sharing, which can make safe sharing of archive information possesses the foundation of intelligent dealing and make realistic meanings to the practice of archive website.