The GPRS smart gas meter are designed based on mechanical meter, integrated with a smart plug-in GPRS device, which connect to the already reserved interface of mechanical counter to receive the pulse, and realize Mechanic-Electronic transformation and storage the consumption data, events and alarm with a controller with GPRS module and GPRS SIM card, and realize the function of remote meter reading. It enables gas utilities to read a meter without entering the home. The gas utilities can manage the information of residential meters through GPRS application system to a great extend saving the cost of manual meter reading.