With the deepening of China' s electricity industrial market reform,the development of large consumer direct purchase of electricity trading has become the inevitable trend of China' s electricity reform. The article first describes the current situation of the electricity market construction and the reform purpose,thereby makes the definition of large consumer direct purchase of electricity trading,analyzes the background of putting forward it,the application of abroad and the achievements,then expounds the purposes of large consumer direct purchase of electricity trading,reveals that it is the inevitable trend of the electricity market construction and development,and finally elaborates on the significance of implementation of large consumer direct purchase of electricity.