Analyses impact of China electric market changes on electric rate is analysed.Itispoinfed out that with the change of the conditions of China electric market,the electric rate should not be priced only with the considering of the supply side's cost,and that it will be more important to consider the possible reaction of the demand side's demand to the change of electric rate. the indexes of the influences of electric rate change on local economy are put forw ard, such as rate of electric cost to product value, price rising rate. The demonstrate impact of electric rate's possible change on local economy is calculated with the data of Chongqing City, 2000.