NB IOT / GPRS large-diameter Internet of things water meter adopts the base meter of international well-known brand, which is combined with Nb IOT module or GPRS special card provided by international and domestic well-known chip operators to directly copy and monitor water meter data through NB IOT special network or GPRS network. Realize the functions of real-time meter reading, frozen meter reading, equipment file management, user file management, data statistical analysis, report query and printing, operation authority management, data exception analysis, data backup and recovery, etc. it is an ideal tool for water resources management of pipe network management and Control Department of water supply company. Through systematic analysis and data mining of water use information of key customers, It is of great strategic significance for water supply planning, rational dispatching and reducing the difference between production and marketing.