With the acceleration of urbanization in China, the proportion of large public buildings in urban buildings has increased rapidly. At present, China's large public buildings has more than 10,000, with a total area of about 5 to 600 million m(2), the proportion of its urban construction area of less than 4%, but the electricity consumption accounts for the total cost of urban construction More than 22%, for the ordinary residential 10-20 times, is Europe, Japan and other developed countries similar to the building 1.5 to 2 times its energy consumption accounts for about 30% of the total energy consumption, is a typical energy consumption, At the same time, China is also the focus of building energy conservation areas. In view of the energy saving and emission reduction of large public buildings, our government and relevant functional departments have issued a series of supervision guidelines, norms, standards and programs, which require energy monitoring, energy consumption statistics, energy auditing, energy efficiency publicity Energy consumption monitoring platform, the implementation of fixed energy and other energy-saving regulatory measures.