With the progress of science and technology, the development of new technology is more and more rapid. The head office should apply advanced technology, good stability and high precision measuring instruments to the production and operation of the head office to improve the management level of the head office. Therefore, the head office should earnestly do a good job in the introduction of new technology and products, through experiments and trials. Work, technical and economic analysis of performance and benefits, to provide scientific basis for the selection of the head office's trade settlement water meter.