Based on discussing basic concepts of information fair and fair services of public libraries,this paper builds evaluation indexes system for fair services of public libraries. Then it analyzes the data of Chinese Library Yearbook 2012 and China Statistical Yearbook 2012,and evaluates the public libraries in eastern,middle and western region of China with the comprehensive indexes of relative gap. Finally,it analyzes and evaluates the fair service status of public libraries in different regions from three as...