There are three main resources sharing patterns in China recently,which are branch library system,the construction of digital local special resources based on respective library s local collection and public lectures resources sharing.

Main and branch library system becomes more and more popular these years.

This paper expounds the necessity of implementing the mode of general / branch library system, analyzes the problems existing in the circulation service of university library under the general / branch library system, and probes into some corresponding countermeasures.

The paper introduces the present development situation of grass-root public library in China,then puts forward the suggestion of constructing the county-town(village) library service network based on the general/branch library system,and discusses the feasibility and several questions.

According to the development of this system,the paper has focused on the necessity,urgency of implementing the general library and sub-library managerial mode and points for attention.

This paper gives diagnoses of the situation of the Futian District library after carrying out the general library and sub-library managerial mode, finds out some universal problems, and puts forward some concrete ways for solving these problems.