County-region economic develoment can effectively reinforce local economic competence and comprehensive power.In order to overall evaluate the Chongqing's county-region economy,by taking 38 districts and counties of Chongqing as research subjects,by choosing 18 in dicators from six aspects such as regional basic economy,regional comprehensively economy,regional finance and regional regional resident's living condition and so on,based on statistics data in 2011 and by using principal component analysis,Chongqing'iis county-regional basic economy,regional comprehensive economy,regional finance and regional residents' living condition and so on,based on statistics data in 2011 and by using principal component analysis,Chongqing'-rs county-region economy is comprehensively evaluated and is sorted out based on the evaluation.The results show that the difference between each county or district is big,that Yubei District,Jiangbei District,Jiulongpo District,Yuzhong District and Nanan District have solid county-region economy,however,Wushan County,Wuxi County and Chengkou County have relatively backward county-region economy.The result of comprehensive economic evaluation virtuously reflects the real situation,and the research results can provide reference for Chongqing's counties and districts to make their accurate position,to make related regional development policies and to realize Chongqing's overall balanced development end.