The "multi meter integration" meter reading system is a software upgrade of the State Grid meter data collection concentrator, which has the function of "multi meter integration" data collection. The upgraded concentrator reads smart meters through wireless (carrier or dual-mode) or RS485, and reads water meters, gas meters, and heat meters through communication interface converters to complete management tasks such as collecting, statistical analysis, and historical data queries of user's four meter data. This system utilizes the mature meter data acquisition system of State Grid to reduce duplicate investment and achieve the goal of multi meter collection and reading.