With the continuous progress of human society, accelerating the rapid development of urban construction and the process of industrialization, which gave the city water supply and water management Ju unprecedented force. So effective, rational development and utilization of freshwater resources has become an important issue worldwide, in most cities in China are facing a serious lack of water, the water in many regions are facing difficulty in collecting, people condemned for compensation for the use of water from not high, water disputes El increasingly serious impact on the development of the construction industry. To ease the contradiction between water supply, scientific, accurate and safe control of water, to achieve standardization, automation management, so the researchers successfully developed a Ic card prepaid smart meter and the sale of water management systems. The product is new, precise metering control, simple operation, easy installation, suitable for a variety of supporting domestic water meters currently in use, is ideal for automating the management of piped water.