Abstract: With the explosive growth of natural gas consumption, the demand of gas measurement in trade transaction for flowmeter verification is increasing. In response to the problems of diversified working conditions during flowmeter verification and low efficiency of manual verification, a simulation model with same accuracy of the verification station was established with the hydraulic simulation software SPS through transient data analysis and simulation model calibration. The range of flow regulation for each valve was deduced with the flow coefficient of valve, and the theoretically-calculated regulation method was verified with the simulation model. As indicated by the results, by adopting this method, the repeated action of control valve can be reduced, the verification operation is optimized, and the verification speed is accelerated.