Abstract: In order to reflect the development level of intelligent technique applied to smart grids,and measure economic benefits brought from power grids intelligence,this paper employed an evaluation method that measures the development level of power grids intelligence.Through analyzing the relation between inputs and outputs for smart technique applied to smart grids,a measurement model was established by Cobb-Douglas（C-D） production function.The applicability of the production function was analyzed by data envelopment analysis（DEA）.The results calculated by C-D production function represent the economic benefits contribution of smart technique,which will demonstrate the influence of smart technique on smart grids construction.Related numerical examples validate the proposed measure evaluation method is effective and feasible.