Abstract: Under the Web 2.0 environment, the way of information exchange has changed profoundly. The book acquisitioning work of libraries has been changed from ＂taking the resource as the center＂to ＂taking the reader as the center＂. This paper analyses the book acquisitioning interaction situation of libraries, and proposes the establishment and implementation of the interactive mechanism of book acquisition ways and methods.

Key words: library;Web2.0;book acquisitioning;interactive mechanism