The construction of new urbanization is closely related to the development of electric power industry. The research on the influence of urbanization development to the operation of power grid enterprises is very important. In this paper, we focus on the impact of urbanization development on the operation of the power grid, establish a new type of urbanization development of the power grid operation "s evaluation index system and raise a new method based on AHP- entropy weight and cloud focus theory. Taking actual data of eight cities of the certain province as example, we calculate and validate the urbanization development of power grid operation"s business impact assessment model. The results show that the comprehensive evaluation of the impact of urbanization development on the operation of the power grid operation and the development trend of the urbanization rate is roughly consistent. At the same time, it also proves that the new type urbanization development in this paper is feasible to the impact assessment model of power grid operation and has good practical value.