Abstract: This paper expounds the intension of library individual infrmation service,and the present situation of individual information service of the Chinese libraries in network environment,analyzes the defects in it. By giving an outline of the information architeeture（IA） theory, the paper discusses relations between IA theory and the individual information service.The paper also eoneretely probes the revelatory tole of IA theory to individual information service and the theoretical model of them. At last, the paper offers some suggestions on combination of IA theory and library individual information service.

Key words: Information Architeeture（IA）, Library, Individual Information Services