Abstract:The new round of electricity market reform was launched by the implementation of the document in 2015 (the CCCPC order NO.9),Guizhou has become one of the first batch of comprehensive pilot provinces and regions for electric power system reform.Guizhou led in electric power system reform,has Completed the establishment of "the country''s first multi-shareholder limited company system provincial power trading institution, 1+4 power trading index system".The paper based on the 1+4 power trading index system initiated,Mined the information of industrial production and social and economic development contained in power exchange with big data,Designed a sector index based on major power exchange sectors.The index combines the major industrial categories in guizhou,The index model is established,the model is analyzed and evaluated by the data of large industrial production in recent years.The sector index is the further supplement and deepening of the national initiative 1+4 power trading index system, which can be used for reference in the operation and decision-making of large industrial enterprises in the province.