Based on the ecological system and sustainable development theory.he indicator system and model for evaluation of ecological community were designed by using principal component analysis method and Remote Sensing/Geographical Information System technology.The evaluating computation was applied in the case study area-within outer ring road of Shanghai City.The results show that:(1) there are disparities of communities within outer ring road of Shanghai City.The score of components spread unevenly within one community or between different communities.(2) In the central area of Puxi,the commonality serving establishments of most communities are perfect,but the housing condition and ecological environment of some communities need further improvements.(3) Although it shows high ecological index and ecological environment quality at some communities in Pudong area,due to the imperfect commonality serving establishments,public traffic system still need to be ameliorated.