The purpose of the paper is to use GIS to improve the regional factor correction in market comparison approach in real estate appraisal,and devise a visual system of automatic regional correction of regional factor.

In the light of the problems appearing in dividing basic areas, choosing reasonable prices, choosing technical lines and determining regional correcting coefficient when preparing the price indexes of the used houses in Shanghai, this paper carries out detailed analysis and puts forward some resolving countermeasures.

This paper provides improvements by making better judgements and analysis on factor revision coefficient from technical aspects.

Understanding those regional factors deeply which involve in the recycling economy will benefit to constructing the kinds of recycling economy model,The article will expound a few of important fac- tors like nature,history and human beings.