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

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.

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.

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.

This paper introduces the concept of main-branch library system and the implementation situation in our country, and in the light of the actual situation of Panzhihua City, advances two modes of main-branch library system, and sums up the difficulties occurring in the implementation of main-branch library system, and puts forward some solutions.