The economic difference in Chongqing municipality is very obvious.Chongqing must suit measures to local conditions to carry out this policy.The electricity pricing is the point of balance of the power market.The policy of same electricity pricing in same net interacts with the Chongqing power market.On the ground of Chongqing municipality power market,this paper classifies the cardinal index and sets up a grey index system including the gross domestic production,per capital gross domestic production,per capita income,power management system,population density,power consumption levle,social retail amount.Region division by means of grey cluster provides the base of decision making for the successful application of same electricity pricing in same net in Chongqing municipality.