Gas meter system capable of improving long-term operation billing precision

The invention relates to a gas meter system for improving long-term operation billing precision, which comprises a gas meter used for counting flow data used by gas and completing parameter setting of a gas meter movement assembly according to a linear value interval by calculating an optimal solution of dynamic balance between the linear value interval and the metering precision; the gas flow acquisition module is used for reading flow data counted by a gas meter; and the charging module is used for carrying out cost calculation according to the flow data read by the gas flow acquisition module and a preset charging rule. After the gas meter runs for many years, the metering precision of the gas meter can still meet the requirement of first detection, then the gas flow data of the gas meter for controlling the metering precision is read through the gas flow acquisition module, and then reasonable gas cost can be calculated according to the charging rule of the charging module. The gas meter system capable of